iRest vs Osaki Massage Chair | Which is Better?

Well, let’s start by putting the differences between iRest and Osaki Massage chairs in a nutshell.

iRest vs Osaki Massage Chair – Which is Better?

There’s hardly any competition between Osaki and iRest massage chair brands, with Osaki showing dominance in almost all critical aspects. A deeper look into what top models from the two brands have to offer shows that Osaki is miles ahead of iRest in terms of massage technique delivery, adjustability, and innovation.

My fascination with this ancient therapy and these incredible massage chairs took me into the details of specific models from the two brands, which opened up valuable insights into how they compare. Read on and discover.

iRest Vs Osaki Massage Chairs [Key Differences]

1. Massage Types and Massage Technique

Technique used in iRest vs osaki massage chairs

Both brands offer incredible models which are capable of delivering a wide range of massage techniques. However, top Osaki models come with a clever tweak that gives them an advantage over their iRest competitors. Let’s walk through a quick comparison of top models from the two brands.

iRest’s most advanced model so far, the SL-A600S-3, affords almost all basic massage techniques such as rolling, kneading, tapping and deep friction. This makes it a great option if you’re looking to get something that offers a similar experience to a light Swedish massage or deep tissue massage.

Additionally, the chair comes with a set of foot rollers and airbags, which allow it to deliver these techniques to both feet at the same time. This offers something similar to foot reflexology massage.

However, note that foot reflexology requires precise manipulation of certain foot sole areas for a range of benefits. What the chair offers is general rolling and kneading techniques on the foot soles.

Osaki’s OP-Ai Xrest 4D+ is also exceptional at delivering techniques such as rolling, kneading, tapping and deep friction.

However, the chair pushes its boundaries further by incorporating muscle tension detection technology, which allows it to locate points of high tension within a muscle bulk before delivering highly targeted massage techniques.

This makes it more effective and efficient than the SL-600S. This advantage is not limited to these two high-end chairs though as it’s a consistent trend across other chairs within the high and mid-range categories.

2. Adjustability

Adjustability feature in Osaki and iRest massage chairs

Top Osaki models go above and beyond when it comes to adjustability, which makes them more proficient at accommodating users of different body frames and sizes. Again, top models from the two brands furnish a classic example.

The OP 4D Xrest comes with the automatic Shoulder adjustment feature, which basically allows the chair to scan your shoulder width and adjust accordingly to allow you an extra level of comfort.

The model also comes with a footrest, which can extend for up to 9 inches to accommodate a wider range of heights. On the other hand, its iRest competitor (SL-A600S) is void of these features.

A similar trend is also seen in mid-range models, with the OS-Pro Maestro LE (Osaki) and SL-A600 providing a great comparative example. Just like its bigger brother (OP 4D Xrest), the Pro Maestro comes with an automatic Shoulder adjustment feature, and an extendable footrest (8 inches); giving it an edge over the SL-A600.

3. Additional premium features

Osaki Vs iRest - Which brand massage chair has more premium features

When it comes to additional perks, Osaki models tend to push the boundaries way beyond great massage technology compared to iRest.

Let’s take a quick look at some of the best models from each brand within the mid-range price category: iRest’s SL-A600 and Osaki’s OS-Pro Maestro LE.

Like most top-notch models, the SL-A600 comes with complementary therapies like Heat and Negative Ion Therapy. The Heat Therapy comes in the form of a carbon fiber heating apparatus aimed at handling the back area.

The Pro Maestro also incorporates heating functionality and Negative Ion Therapy. However, it goes a few more miles in terms of quality and design. The chair’s massage rollers feature Infrared Heat Therapy functionality, which allows it to provide highly targeted and deeper heating while delivering various massage techniques.

Beyond heat therapy, the Pro Maestro comes with extra tech features, which give it extra points in terms of overall user experience compared to the SL-A600. These include touchscreen functionality, wireless charging capability, and a highly convenient quick keys control panel.

Osaki’s tech edge is not limited to these models. A closer look at the poster boys from each brand tells us that the OP 4D Xrest is much more technologically sound than the SL-A600S.

The OP Xrest simply offers a lot more in the presence of extras such as Alexa-enabled Smart Voice Control, App control, touchscreen functionality, and Light Therapy. These extra features push the Osaki brand miles ahead of iRest as far as user experience is concerned.

4. Auto Programs

iRest vs osaki massage chair - which has more auto programs

The number of automatic programs in a massage chair provides a somewhat fair indication of its likelihood to give you the massage experience you’re looking for.

Generally, more programs mean better customizability. It’s safe to say that iRest beats Osaki in this category, as its models consistently provide more automatic programs to choose from.

To start from the lower price range, iRest’s SL-A100 offers 23 massage programs while Osaki’s OS-Pro 4D Encore only affords 9. Going up the price ladder, the SL-A600S-3 offers 21 programs while the OP 4D Xrest offers 16.

5. Price

iRest vs osaki - Which brand massage chair is cheaper

Osaki’s perks over iRest come at a higher cost, as a quick look at the price tags reveals that Osaki models are generally more expensive.

iRest massage chairs fall within $3,000-$8,800 while Osaki models fall within $1,500-$15,000.

The SL-A600S proves to be iRest’s most expensive option with a price tag of $8,800 while Osaki’s OP 4D Xrest goes at $15,000.

A similar trend is also seen in the mid-range; with the Maestro going at around $11,000 while the SL-A600 falls at $7,500.

6. Warranty

Osaki or iRest - Which brand massage chair offers better warranty

Osaki offers better warranty terms than iRest when it comes to replacing parts. The former offers a 3-year warranty period for in-home service and 5 years for parts repairs. On the other hand, iRest limits its terms to a 3-year warranty period for both in-home servicing and parts.

Comparison of the Best Massage Chairs from iRest and Osaki Brands

 SL-A600S-3  SL-A600SL-A100OP-Ai Xrest 4D+OS-Pro Maestro LE  OS-Pro 4D Encore  
Roller Style3D3D3D3D3D3D
No. of Airbags324036463226
No. of Programs218231689
Zero GravityYesYesYesYesYesYes
Heat TherapyYes (Lower Back)Yes (Lower back)Yes (Lower back)Low back and FeetInfrared Heat mechanism (Whole Back to thighs)Low back and Calves
Body ScanYesYesYesYesYesYes
Foot RollersYesYesYesYesNoYes
Calf RollersNoNoNoNoNoNo
Calf AirbagsYesYesYesYesYesNo
Arm MassageYesYesYesYesYesYes
Shoulder MassageNoYesYesYesYesNo
Neck MassageYesNoYesYesYesYes
Hip Massage YesYesYesYesYesYes
StretchYes  YesYesYesNoNo
USB ChargerYes  YesYesYesYesYes
Remote StyleRemote controller.Remote controller.Touchscreen, remote controller.Touchscreen, Armrest ControllerTouchscreen, Armrest controller. Remote and Armrest controller
Quick KeysYes   YesYesYesYesNo
Memory SettingNoNoNoYesYesNo
App ControlNoNoNoYesYesYes
Height Range5’0”-6’0”5’0”-6’0”5’0”-6’0”5”-6”5”-6” 
Weight Limit300lbs300lbs300lbs260lbs260lbs260lbs

iRest Or Osaki – Which Brand Massage Chair Should You Buy?

Obviously, the Osaki brand is a better pick than iRest as its models have a lot more to offer in almost all key aspects of massage chairs.

There’s basically no competition when it comes to the efficacy of massage techniques and types, adjustability, and modern innovative features. Beyond technical factors, Osaki’s more generous warranty terms offer better security to your investment.

The OP-Ai Xrest 4D+ would be on top of my list if my budget could be stretched to around $15,000. The reason is simple:

Though its iRest competitor(SL-A600S-3) goes at a significantly lower price tag, the OP 4D Xrest lives up to its price with an incredible combination of high efficiency and an impressive array of modern tech features to enrich the overall user experience.

The OS-Pro Maestro LE would definitely be my second pick for more/less the same reasons. The chair simply blows the competition out of the question when compared to iRest’s best mid-range model, the SL-A600. Like the OP 4D Xrest, the Pro Maestro offers a much better option as far as core massage technology and overall user experience is concerned.

In the lower price range, the Osaki OS-Pro 4D Encore would dominate as the third option for the same reasons that its bigger brothers would dominate the first two positions. Despite being a few hundred dollars cheaper than its iRest competitor, the model has a lot more to offer in terms of additional tech features.

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