My partner and I have used everything from a cheap $500 dollar mattress, up to a Tempur-Pedic mattress and nothing could provide the support we both needed. Thank god we found the ReST bed! I prefer a stiffer bed, but I roll around a lot so having a bed that adjusts to me automatically is outstanding! My back is never tight or sore when I wake up! My partner prefers a slightly softer mattress, but she struggles with upper body stiffness and pain so having the ability to pre-set her side to suit her needs has done wonders for her. We are both beyond thankful that we have a ReST bed and we would highly recommend it to anyone that wants to truly sleep better and give your body the support it needs without having to adjust anything manually.