I highly recommend Domke bags as well. They're rugged canvas, and they visually disappear instead of screaming, "LOOK AT ME, I'VE GOT CAMERA GEAR". I have a small one, I forget the exact model, but I keep my Contax G1 and G2 bodies, 21, 28, 45 and 90 lenses, a TLA 20 flash, and maybe 10 rolls of film in it when I'm on the road.