This mattress has been great for me IMMEDIATELY! After many car accidents and injuries to my back I require a firm bed, but want the comfort of a plush mattress. This one hits both categories for me. Top layer allows me to sink in nicely and rest of the layers provide that firmness my body requires. According to my fitbit I went from waking up 5-8 times a night to just ONCE the first night on this Lucid. And getting a better sleep score than I ever have before. Only reason for 4 star instead of 5 is fiancé says she cannot sleep on stomach, even though I have no problem stomach side or back. Highly recommend!