I have both the Crumpler 5MDH and the 7MDH. I originally got the 5M, but it ended up being too small as I increased my gear. But it's what I take if I'm shooting at shows, as I usually only need two lenses. The 7mdh is great though, as it fits everything I have- 17-55 2.8, 70-300 IS, 11-66 Tokina, nifty fifty, cleaning kit, and even a gorilla grip. And it's deep enough to store the camera body with any of those lenses attached. But if you only need a two-lens bag, the 5mdh is a great, inconspicuous bag. Actually, that's what I like about it most- it doesn't scream "camera bag."