Love the Ghost Mattress. Nice and firm. No sinkage. Sleeps cool and don't feel my husband moving around on his side of the bed. We bought a king for ourselves and liked it so much we bought a full for the guest room. Slept on a spring mattress recently and it was awful.
I was skeptical at first. "How can a mattress, bought online, be better than a mattress bought in a store." Well, let me say it is! It was a little form for my wife's liking at first, but after about a weeks time it softened up to a very comfortable state. I love this mattress!
Laying down, the bed feels fine, though it was taking me much longer to fall asleep. After 6+ hours, I have a sore back, and after 8 hours, I was waking up feeling as if my back and sides had been pummeled. But hey, I rarely have the opportunity to sleep for 8 hours. ;) Giving it another couple of weeks to test out. Most likely, I'll be returning the bed.
I've read all the reviews, and bought this with my girlfriend. She wanted a firmer mattress; this seemed like a good deal. At first, I thought the mattress was TOO firm (as some other feel). My girlfriend thought it was perfect right away. Anyway, I slept on it the first night and... incredible. It really is phenomenal in support and in everything else. In short, this thing is awesome, and worth every penny. The GhostPillows are amazing too!