So far, this mattress had the unusual distinction of immediate comfort. As a lighter side-sleeper, I'm most comfortable with a softer memory foam type of mattress, because too much "support" feels like sleeping on a cement floor with only a sleeping bag to me. But this had a week to expand while I was visiting family, and felt phenomenal when I returned. The amount I love sleeping in this bed has me purchasing the accompanying down-alternative pillows just because they asked for a review. This has been amazing for me, and they have a feasible return policy if it's not for you.