RVking mattress winners?

We have a Tempurpedic at home and wanted something similar for the camper but couldn't justify the costs. We tried the mattress topper and that just wasn't comfortable. Some friends had gotten a Spa Sensations 8" memory foam mattress from Wal Mart and liked it so we got one. We have only been out once this year, however, I woke up sick on Friday and wouldn't have even gone except the kids would have been disappointed and we were meeting another family. I stayed in bed all weekend and I must say, it is a very comfortable mattress and compares to our Tempurpedic at home. The best part was that we got a king sized one for $254.01 including shipping and tax.