I'm all about the Tamrac:
A) Comfortable, foam-padded backpack harness.
B) Double zipper pulls for quick access to photo gear.
C) Mesh side pockets for quick access to accessories.
D) Adjustable, foam-padded dividers.
E) Foam padded camera compartment.
F) Foam pillars support camera with lens attached.
G) Quick-release buckle for security.
H) Weather flap protects camera compartment.
I) Large top compartment holds personal items.