I like the edge support as compared to the basic mattress. It is still too hard for me as a dedicated side sleeper. I purchased a memory foam topper to go on it, and it sleeps much better with less joint pain in my hips and knees. It is unreasonably heavy, almost takes 2 people to rotate. The total lack of anything to hold on to to move it is very problematic at this weight. The quality of assembly seems good.
We were looking for a mattress that would be cool and comfortable. The Mint is not terribly hot, but still a bit too warm for us during the night. I'm 5'2" and 120 lbs and the Mint was too firm for me. When sleeping on my side, my shoulder was jammed into my upper spine--sore in the morning. I found the springiness of the mattress uncomfortable. When I rolled over, it felt like the bed was propelling me. My husband (5'9", 160 lbs) thought it was okay. We are returning.