Nothing is perfect so obviously, cannot be a 10. By grading the mattress an eight I offer a very high rating. But we are all different and I always consider that what works for me isn’t always the same for others. My wife and I both sleep very deeply on this mattress but both experience lower back pain upon arrising. Pain quickly subsides and we are supposing this to be natural transition from the softer mattress we replaced and which will continue to subside until gone. Very comfortable mattress. We referred to Consumer Reports and cost comparisons before buying. Thanks.
I absolutely love this mattress. I'm a 240lb powerlifter, and my shoulders and hips are constantly sore. This mattress is amazing. Only problem is it sleeps hot. There is little if any cooling.