new pack for backcountry fishing and camping?

[flyguys]

Looking for a backpack for my son and I to use on a backcountry trip. It would more than likely be a three day trip at the most, maybe four. Anybody have any thoughts on packs that I might look at? If anyone has any firsthand experience with any brand please let us know. Being a novice to the sport, any and all posts will be appreciated. Thanks flyguys!