I'm looking at a backpack mainly for my MB, but potentially also for my SLR camera and a few lenses. I've got a shoulder bag that I'm outgrowing, and have thought about small backpack, and I just got a MB, and have thought about a small backpack. I really want it to be cheap, like $50. As far as camera gear goes, I shoot with a pretty small SLR, a film Vivitar, primarily with a 135mm lense, but I usually carry a 50mm and 28mm macro, and might start carrying around a flash. Depending on how life treats me, I'll either get a longer lense (200 or 400?) or possibly another SLR, and in the future I'll replace it with a DSLR. Can anyone reccomend something to me?