MrAsk has a memory foam mattress which has recently developed amnesia. The covering has become wrinkled or the foam has shrunk, he still insists it is comfy and very warm (to the point that he is sweating sometimes). I find it heavy to lift to tuck the sheet in and can't smooth the sheet over the wrinkly bits (no, he isn't in the bed at the time). The mattress is about 5 years old and we ordered another mattress just recently.
luuuuush......get one! best night's sleep i have ever had. i love my spoingy mattress and they are worth the money - even a 3'' topper makes a big difference x
Had ours for a few years now,it is 100% foam,when new it was quite firm,still is,but just starting to sag in the position laid in.Not a problem though,as you do not fall into the middle like a normal mattress, and subsequently your wife.
Downside is that it takes the two of us to turn it round (You don`t turn it over ),not too bad if you have the space to do it.This particular make was a mid price range,not a dear one.
I have memory foam pillows that go hard and lumpy. I also have memory foam insoles and they also go lumpy and uncomfortable. I think all my memory foam are losing their memory or at the very least developing short term memory loss. :)
We have a mattress with a built in memory phone topper. Not as expensive as the full memory foam but you get the best of both worlds, firm mattress with the comfort of the MF and not too hot.