I have a M.U.L.E. and a Rogue (or a Lobo, I can't remember). I love them both but my thoughts are opposite of some of the posters. The more space you have, the more stuff you'll carry. The more stuff you carry, the heavier it is. My tubes, tools and tire repair stuff is in my seat bag. I'd rather have the bike carry weight instead of my back. I used my Rogue/Lobo for BRAG (the Bike Ride Across Georgia) and it was great to have.