5 star mattress! We used to own a Serta mattress for years, and it was fine. My wife and I started shopping around online and bumped into some ads from Noa. We never considered buying a mattress online, we we really just looking for some information about what to buy next as our Serta was getting old. After comparing pricing and components, on paper, the Noa seemed like an excellent value. With the return policy, we didn't really have anything to loose. It's the best mattress I've ever owned. I've been falling asleep like a rock, and my overall aching of lower back is completely gone. 5 stars!