After lot of deciding, went for this mattress. So glad I did. Went from a traditional open coil to hybrid. It's probably firmer than med-firm, like most reviews on here say, but that's the reason I chose it. Wanted more on the firm side. The edges are well supported. Many says it has a "roll off" effect but I don't find that. I weigh about 11st and my husband about 18st and he also finds it comfortable and firm. Nice depth once expands fully. Delivery was alot quicker than stated. Overall very happy. Also managed to get it in a sale at £177 for king size.