A brand that probably won't get much recognition here, largely being unknown, but that I think is really awesome: VAUDE.
Their packs have some serious innovation because they are trying to one up alot of the more known companies and gain headway. Plus the price point is INSANE. Got the lady a nice 30L overnight pack for 40 bucks shipped.
The Vaude Traillight is a nice bag and hydration compatible.