I carry one large platypus in my pack and a 32 oz nalgene bottle in each holster on my pack, for easy drinks. We stop and refill the nalgene bottles at every opportunity, keeping them topped off when possible. I've always disliked the bite-valve tubes.
We also carry another plastic canteen filled with tequila. The following picture was a taste-test of three fine tequilas. Apparently the Antigua Cruz was winning.
