After 6 months of research, lying on tons of mattresses, sticker price. I realized Best way to know - sleep on it! TBH I was nervous ‘mattress’ in a box! However my past experience wWayfair outstanding products, excellent customer service, return policy, faster shipping than a local store delivery  by far the best price! ordered Sun 416 mattress  adjustable frame. Arrived Tues 419. (Need 1-2 people to lift-heavy) My husband put the frame together in about an hour. (Place the frame exactly where you want it-heavy) Then the BOX! we placed the mattress on the frame. It opened up perfectly! (24hrs later) Now it’s 3 weeks later BEST SLEEP EVER! Iwake up refreshed, no painstiffness! Definitely Recommend!