Greatings Ladies and Gents; What are your favorite bags or backpacks for BOB duty and why? How big? I'm torn between a Camelback Hawg and someones version of a three day pack with hydration capabillity. I kind of like the Hawg because it's small and that limits how much I'm able to stuff it with. On the otherhand, the very thing I like about it limits its flexabillity re adjustments for season ect. What are your thoughts/choices? Thanks for your time and kind considerations. Jim