I've had this mattress for almost a week now and I have to say it's quite the improvement from my old one. The first few nights I literally drifted into sleep. I don't have a box spring yet, it will be here tomorrow and still this mattress is comfy! I've fallen asleep so many times just from laying on it after work lol. It really is 8inches too! I wanted the 10 but wasn't sure how it would look with my low profile bed. Also, the 7 inch box spring was more pricey than the 9inch.
TIP: When unboxing the matress don't use scissors. I literally just peeled off the row of tape along the sides and it unraveled in minutes. A lot of people were complaining about their mattress not fully rising to it's proper height but they might have accidently poked holes while trying to unbox their mattress