As we are in Canada, we looked at the two major bed-in-a-box options here, Casper and Endy. We also tried some Tempur-Pedic beds in store, as we had read that [Octave] is closer in feel to Tempur-Pedics. We loved the feel of Tempur-Pedics, but not the price tag, and didn't really feel that Casper and Endy were as supportive in comparison ... After using [Octave] for half a year, it has contoured to our bodies somewhat, but not to be point of sagging. The sides offer good support if you're sitting on the edge of the bed, unlike other foam mattresses we looked at. Overall, we're very happy.