i am no pro, but i have changed bags as fast as i have changed underwear.
no matter what i rather, or which i prefer., i end up with that Domke canvas bag. its not big, bulky, fat, long, ugly, heavy.
my preference is the F3x, starts out big, and empty, i fill it up with my gear, give it a pat on top, a pat on the side, and a pat in front. it becomes small, slim, light and comfortable.

i saw on DP review that Kata has a competition for photographers to design a perfect bag, so i submitted the Domke F3X ruggedwear :D


Dave