OK, so I read most of these reviews and I was somewhat hesitant to spend 500.00 on something i could not test. However, the percentage of bad reviews versus good or excellent made my decision. I am very happy with my order. The mattress cam very quick, well packaged and everything. I am still trying to figure out what the "smell" everyone is referring to on it. I smelled nothing....could it be the time of year it is shipped and whether its cold or hot? Who knows, I did not smell one thing. As far as firmness - I went with medium because I like a harder and mattress and my partner softer. We both are very pleased with it and slept great on it. For what its worth, we looked at a set that costs 1900 and I can get 4 of these for that price and still be happy. Mattresses that say they are guaranteed for 25 years, yeah whatever. The products and technology change faster than their warranty and its not worth a 1900 investment. If you are on the fence with this, take it from me, I am VERY picky about things and i would defintley recommend.