Surprised nobody mentioned the Eagle A-III
NatchezSS has them for a very good price. I have one in foliage that I just retired for an Eberlestock LoDrag. I needed more capacity and can now carry a rifle in my backpack.
ETA: The eagle has a molle version. If that's your style.
And yes, Indy is getting an REI. Going in were the old Dick's Sporting Goods was located on 82nd Street and Allisonville
that i will sell to you esrice for 175. its in black. and has more padding and features that you would ever want.
I have a Mystery Ranch 3 Day Assault pack that I've been very happy with.
As Stacey already said, buy once, cry once.
3 Day Assault Pack | Mystery Ranch Backpacks
Osprey Talon... You will not find a better performing pack for the money. Or try a GoLite. What I would do, wait til summer when REI comes in on the North Side, and Try some of the REI Line (REI pinnacle is a nice one).
Here's my suggestion, lol.