Backpack recommendations
I use a backpack to carry my commuting load, and my backpack is wearing out, so I'm looking for a replacement. Not going to switch to panniers.
For 8 of my 10 one-way trips, I can get away with a very minimal load; on Monday morning and Friday evening, I carry more stuff to/from work.
I'm currently using an older (2010?) Camelbak Blowfish. Like: a minimum of dangly strap ends, expands to accept larger loads, not too big. Dislike: not quite big enough for the larger loads I need to carry. I think its max capacity is 18 L. It's not waterproof, but water intrusion hasn't been a problem in the rain I've ridden through.
Nice to have: laptop compartment, extra compartment for small stuff, a few internal pockets. I carry a cable lock in my bag and would like a good place for that. Not looking to break the bank, but I'll spend money for good quality.