It's been over a year since we received the (very expensive!) chair and we are still waiting for Spinlife to fix the problem! I tried to leave a review on their website but lo and behold, I cannot do so... interesting, no?
Based on the extremely enthusiastic recommendations of the agent I ordered a PR 535, paying for upgrades that included oversizing the chair and also upgrading to a "lifetime" premium fabric (Brisa). Unfortunately, the actual dimensions of the "large" chair are smaller than advertised, and are closer (slightly smaller) than the dimensions of the standard chair. They sent out an adjuster/repair person early on, and the gentleman agreed the chair was not the correct dimensions. Additionally, it lists to one side. Not only has Spinlife not corrected the problem, I cannot even get anyone to respond to me since the rep was here over a year ago!
The seat back is very padded and comfortable as long as you are not a large person. However, despite the website claiming it fits a 6'2" person, the back is VERY short. My grandson in the one picture is ~5'6", and his head is well above the back - the other grandson is ~5'10". The back on the old chair being replaced cost less than 1/6 of the new chair and was not oversized, yet the back is higher! My husband needs to use an extra cushion on the seat as there is not a lot of padding on the seat cushion itself. The "premium" fabric is so slippery my husband has to be careful when he uses the lift mechanism, and the "protective" covers are unusable.
All in all, dealing with Spinlife meant spending nearly $2,000 for fake promises, product hype and no real customer service. My advice is stay away!