We bought a king-sized mattress when they had their boxing day sale. Yes, it was crazy expensive, but it was completely worth it. Lessened my back pain and they also don't transfer any motion when your partner moves around in bed. The mattress smelled kinda weird for a few days (like mushrooms or something) but it wasn't that nasty chemical smell you get from most memory foam stuff and it dissipated pretty quickly. Their service was good and trying out the mattresses in the store in Westboro was no-pressure.