As I tried various packs I suprised myself and ended up with one of these:
It seemed to meet the needs I had for a daypack and I'll hike out to the truck and get my Frieghter Frame sans pack for the rest of it. I'm finding that I'm carrying more and more as I get closer to my desert deer hunt saga. Shooting Sticks, Binoculars, GPS, Water Bladder, and Binocular Tripod make up the essentials, besides gun and ammo. I always carry a knife and a handgun with reloads, as well as a flashlight, and cell phone of some sort so that wasn't included in the "essentials".
The more I play with the pack the more I like it.