I bought the Serenity 2D Zero Gravity Massage Chair from Costco (Company that makes it BestMassage). It seemed like a good deal and at first it did feel nice. After the fourth use, it started clicking and it got stuck. For the money, you'd expect it to work, at least for a couple of years. If you're looking at the product, I'd would not recommend it. Costco will refund me the money and they are picking it up which is great. I'm going to look to see what else is out there that is of better quality. Any comments for any better ones out there are greatly appreciated.