I bought the Temperpedic pillows and am not really thrilled with them. Because I'm too cheap to throw anything away I do use one to elevate my ankles in bed but have to say that after several years it is getting flattened out (now I'm not a big girl so its not my huge ham hocks smushing it out, lol) so I would worry about spending all that money on one of their mattresses and have it lose its shape.

I would also imagine they weigh a ton if you are going to move the bed etc. A pillow top for on your existing mattress might be a good thing to try though. Good luck.