I'll second the recommendation for that 467. The cons are that the actual gear section in the bottom is snug. I have my D90 with battery grip and 18-105vr attached, 70-300vr, and 50/1.8, leaving just enough room in one little corner for my charger and rocket blower. In a pinch, I can just BARELY leave the 70-300 attached and still zip it closed, but it feels too tight for my liking.
On the plus side, the bag is incredibly well thought out. Everything is very accessible, and there are some little details that make it different than your typical off-the-shelf backpack. For example, the external zippers are hooded so that they stay in place and don't swing/rattle when you walk. And it comes with a rain cover for bad weather. Just little things like that. The straps are very comfortable, and it has a chest and hip strap too, if you're really trekking with it. The laptop compartment is plenty big for your lappy (holds my 15.4" with travel battery). The front compartment is big enough for a light change of clothes or a bunch of accessories, pens, notebooks, etc., and it's laced with three flat-ish pockets in the front. I have only had mine a few months, but it's wearing like a tank so far; seems very durable.
Really love this bag. From what I see out of other bags, Kata could easily charge twice what they do. I paid almost the same amount for my first backpack, the Nikon one, and there is no comparison in terms of quality.
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Eric