I'll echo all of the other votes here for a Badlands pack. I've got two, because I liked the first one so much. My day pack that got me hooked on Badlands producs is a Hypervent. This pack is hands down the most comfortable, nimble, can't tell its there pack I've ever owned. It beats the non-hunting packs from REI I've owned, Gregory, Arc'teryx, etc. The thing is simply bulletproof; I can't say enough about it.
So recently I bought the Badlands 4500, I got it in the mail last night, and I'm really impressed so far. Can't wait to get out and use it.