I've used a Nimrod pack for several years. It's well made and offers lot's of options - different bags, belt attachments, etc. They supply the wildland firefighters with packs so the quality is good along with the customer service. Bison Gear is nearly the same and is also a good brand.
While I think brands like Badlands and Eberlestock are great, they are IMO overbuilt and therefore a little heavy. Some of their day packs weigh as much as 4-5 lbs. empty!
Lot's of good gear out there. The best option would be to try out as much as you can, then decide.