Camera bags are very personal and usually pretty expensive. If you can, borrow some bags from friends...even ones they hated may be great for you (any you might get a great deal). Another option is to visit a major camera store, but usually you have to visit a big city (NY, Chicago, LA) to find stores big enough to really give you a good look at different bags. Take you equipment with you and try putting it in the bags. Don't forget all the little extras (cables, card holders, etc), because those are things you often need quickly.
Sorry I can't offer you specific advice. I have some bags I loved, but they no longer fit me. I'm hoping to try out some of the Kata bags during my next Chicago visit.