I was unsure at first but after a few days I've fallen in love with this mattress topper. I think the extra thickness really helps on the 5.5 inch. The smell didn't bother me at all. I let it air out the morning I got it and slept on it the same night. The first couple days my back and actually bothered me a little. I think my body just needed to adjust. Now it feels great. I would recommend getting a thinner pillow though as your body will sink down into the mattress a lot. If your pillow is too thick it will really crank your neck while the rest of your body sinks down in. I find sleeping in just about any position ends up being comfortable. Didn't have any problems with being too hot. I live in southern California and we've been in the middle of a heat wave since I bought it. Haven't had any problems being too hot. Not sure what's going on with the people who have complained about that. It was a good buy... Although the cover has a certain amount of padding built into it that actually takes away some of the nice squishyness of the memory foam. I wish the cover was thinner. I prefer the topper without it.