I've never purchased a mattress without trying it out in a store before, but took the risk and ordered this adjustable bed set after researching many brands and reading many reviews. The firmness is perfect for me! I was really worried it would be too soft, but it's between medium and firm, closer to firm which is what I needed. I also worried it would make me feel hot, but it doesn't. I love all the features of the adjustable base! I got the split-head King so the tops adjust separately and the feet adjust together (which I could change to adjust separately, but since the bottom part of the mattress is one piece, this is better). I love that the vibration turns off automatically and underbed light has been useful. The sheets I purchased from blissful nights were ok, but one of the straps broke the first time I made the bed, but I did find a different kind of split top sheet that works much better. Overall though having slept on the mattress for a month and a half, I am very pleased! The sides are firm so it doesn't feel like I will have an issue with the edges breaking down. I give the bed set a 5 and the sheets a 3 so my overall ranking is a 4. The absolute plus is the price!! I searched many adjustable beds and this hit the mark and was a fraction of the cost of other adjustable beds.