I make a point of reading other customer reviews before I purchase an item, especially when the price seems "too good to be true". I have fibromyalgia and my husband has issues with his sciatic nerve once in a while. We decided to try a memory foam mattress and were going to buy a "name", until I was investigating on the internet and came across this mattress. It may be too soon to say how well the mattress holds up, but it feels wonderful! We opted for medium, which is definitely firm enough. We have been commenting to each other, almost daily, how well we slept the prior night.