Originally Posted by
bikemig
I like Jandd duffel rack pack. I like it because it is not shaped or contoured; it's just a bag you can stuff with your stuff. I find that this bag plus a messenger bag is more than sufficient for my needs.
http://www.jandd.com/detail.asp?PRODUCT_ID=FDRP
I use something similar, the
Timbuk2 Hunchback trunk bag. (Timbuk2 doesn't list this on their site anymore so it may be discontinued now.

).
I'm able to get a lot in this bag, including my laptop.
I have two panniers that I never use now since I fit everything I need for a day at work in this bag.