I don't like those vibrating massage chairs. They just make my skin itch after sitting in them. I have an iJoy massaging chair and it's like the massage tables chiropractors have. There are these rollers in it that travel up and down the back of the chair. And, with different settings, you can get different massaging action with them.
I think these are about $750 or so at Costco. But, if you're looking for a massage chair, they are definitely the way to go.