Chrome Bags Online!
80% of our 25+ shop employees have been using Chrome as their regular goto bag for years; whether it be a backpack, roll-top or messenger. They are comfortable, extremely durable, reasonably priced and not to mention still made in the USA. You really can't go wrong.
So which bag do the others use? The second runner up is local Milwaukee fav' Shaggy of "Shag Bags". Want something out of the ordinary, I sincerely recommend emailing Shaggy!
Last but not least, we have Crumpler; an affordable bag from the creative minds down under.