I really like the mattress, very comfortable, for me a 9 or 10 out of 10. I sleep mostly on my back or side. My wife however, prefers sleeping on her side or stomach, she says its too hard for comfortable sleeping on her tummy, wants a foam topper. But she says its much better than our old mattress. She would give it a 7 or 8 out of 10. So, buy this mattress if your want a good night sleep and prefer your back or side. Plan on a topper or different mattress if you sleep on your stomach and have a large bosom, as it may be uncomfortable. We checked out those very expensive mattresses of all types and I Highly recommend this one over those unless you have lots of cash to throw away. My wife wanted a $2,000 mattress , but agreed to try this one due to anti-bacterial / allergy / dust-mite properties. She loves it, just wants more cushion, so we will get a topper for her sake. Have a Good Sleep!