I've been commuting with a backpack for over a year, but I just recently installed a rack and bought some Ortleib Back Roller classics. Holy crap! What a difference! My back is no longer sweaty and it's so nice being able to move easier without something on your back. I honestly can't believe I didn't make this change sooner.

The only other change I'm considering making is buying a trunk bag for things like drinks and my soup cup. I find it hard to keep these things upright in a pannier. Alternatively, I could get a small basket to mount on the front and use small bungee cords to tie down everything.

Do any of you transport drinks or food? How do you do it?