Therapedic Mattress Review

I don't know if compared to its much more expensive counterpart, Temperpedic, that I would have had a better experience; but just after a year of use there is a deep sag on both sides of this King size bed.    It's now so uncomfortable that I have to replace the bed.   I could have spent the same amount of money on a stardard type, high-end matress and owned a product that would have lasted many more years than this one.