Personally, I lie very comfortable in this bed and if you have only caught the personal degree of hardness, the difference is to own bed not continue on.
I recommend only one pad in the form of 2-3 rugs (on cold days), but because it can get very cold at night from below. However, this is not a defect, but normal. Overnight loses the airbed "something" in the air. That too is normal and hardly an air mattress or air bed has not the same problem. The amount of leaked air is but small and you need have no fear that the next morning you lie on the floor. If you like sleeping on a hard mattress, could thus notice that some few air in the morning. Others who like it softer, probably notice no difference.
All in all a great product that I would buy again!