The Revolution is a sweet bag and the quality is very high indeed. However mine is approx. a year and a half old and the frame is starting to wear through the bottom of the bag. Right after I purchased mine I noticed they started to reinforce the bottom with some sort of heavy vinyl which might take care of this problem though.
I have a hand towel in the bottom of my bag and it's stopped wearing through. The bottom of the higher end bags are much better.