If you're gathering up quite a bit of gear and looking to upgrade your camera bag, check out the Tamrac 5788 Evolution 8 series. The bag can be worn either as a backpack or a sling on either shoulder. Access to the main compartment can be accessed from each side or from the back. Tons of space to fit even a laptop, and a section designed to hold a DSLR body with up to an 8" lens attached. There's a QuickClip Tripod strap to keep a travel tripod secure, and plenty of padding on the outside as well as the inside. Prices for the Tamrac 5788 Evolution 8 can be found here.

AlexPN
This one looks pretty good and the price must be low:
https://www.chinafancier.com/enproduct_largerimage.asp?fl=226
xlerate
Looks like a good pack, well thought out with the changeable color coded straps & clear pockets.
I'm trying to get prices on these 'King-Kong' camera packs: https://goo.gl/LEtj
Johnfr
Hi
The bag and price is nice but, at my own opinion, there is to much pocket without protection, so it's not a bag for the street and other crowded thing ;).
I prefer the loka from f-stop gear ( fstopgear.com ), which is a more sturdy with waterproof zipper and other thing and more beautiful :p.