Who makes a better water-bag for the back? Ive been looking at them and wondered what all of you are useing! I do wear a chest protector if that matters.. and how do u guys wear them. I see they have back pack type straps but that looks uncomfortable while riding. I was thinking maybe i could drill holes in the back of my chest protector and zip tie the bag on... what do u guys think!! oh yeah, i dont need an expensive one, just one that works!! I dont race so what do u think?