Good point Ara. Although I work hard in the a/c field, I still have a bad back that I have to watch. This is just the result of age which is now 52. So, I'll definetly have to work out again and get in better shape.
I have a LowePro Classic backpack, but it's just a little too big for what I want to take. I'll probably wind up with either a regular backpack and some inserts or a smaller Trekker.