Air beds can be comfortable in mild weather. When it gets cool they get cold fast. Makes my old bones ache. I have a couple of backpacking weight Thermarests but the best thing I have ever found is this in the XL size on a cot. Still fine without the cot and it's warm. Self inflating and easy to put away.
http://www.rei.com/product/778152/re...-inflating-pad
3.5" pad on my cot.

Want more comfort than this? Probably better off to stay home. These pads really are that comfortable!
KISS Principle = Keep It Simple Stupid.
Your best defense against Murphy's law!