Awesome pack - excellent quality - Vertx EDC Gamut Backpack, 28L

I love this pack. Very comfortable (I'm 6'1"), organization is well thought out, exudes quality craftsmanship. The only downside to this pack is the water bottle pockets. They really are suitable for an energy bar, especially if anything is stored in the side pockets underneath the water bottle pocket. I suggest putting your water bottle inside the back or clipped to the outside.
The built in organization makes it very easy to store and organize junk, electrical accessories, pens, knives, magazines and just about anything else you might carry on a regular basis. This is not a large main compartment to store tons of stuff but it also not a bulky bag. The ability to deploy the front stuff sack makes it easily expandable for temporary storage of a coat or package or whatever.

Optics Planet had a great price and very fast processing/shipping.

I wouldn't hesitate to buy another one, especially if they made the water bottle pockets larger.