LunaZ, how many lenses and stuffs do you have to put in the bag?
If you are not carrying heavy/lots of gears, the Lowpro Sling bag is very good.
I can put 2 regular zoom lenses, 1 80-200/f2.8, speedlight, and a body, plus filters(option filter holder attach on the Sling), memory, in one bag.
And when I have to change lenses, I don't need to put the bag down and getting clumsy.
Lowepro | Classified Sling AW