We had a Sleep Number bed for seven years and regretted every year of it. Finally after reading hundreds of different “bed in a box” reviews, we arrived at the Ghost Bed Flex. The Flex is very comfortable equally for both of us. Never hot no matter the position. I side sleep mostly without moving back and forth. If there is a better mattress and company out there, we’re not taking a chance. We are 100% satisfied with our decision to buy a Ghost Bed mattress. The customer service is second to none. The quality exceeded our expectations.