Which one do you think is the best of the 3. I want a backpack with a good amount of storage that is also comfortable. I also want it to cool the back. Let me know what you guys think. I was leaning towards camelbak, but i just started reading stuff about the deuter and it got me thinking. I usually ride on the weekend for about 4-5 hours. I also live in southern california so we get pretty good weather.