So far, I'm extremely pleased with this purchase. The mattress arrived about 10 days after my purchase, which was great. It was easy to open and there was no weird smell or anything, so I was able to put linens on it and sleep on it right away. I got the medium, and it's firmer than I expected in the center, but definitely less so on the edges. The 14" mattress makes it significantly taller than my previous 8" mattress, so I sort of slide off the side when I'm getting out of bed and that doesn't really bother me.