While the mattress is comfortable, I am going to trade the soft for a firm because the soft sinks too much under my 240 pound body. I probably sink into the mattress 8 inches and this leaves my hips and pelvis out of alignment with my spine and has resulted in back pain. Hopefully the firm will be more supportive. It's hard to strike a balance because my wife is 120 pounds and the only options are firm or soft. Wish there was a medium.