Ask HN: Whats your favorite backpack for everyday carry?

My current backpack is falling apart and can't neatly contain all my my daily carry anymore. My current job is Network Security so I have a lot of accessories​ (red team, blue team daily carry laptop, work laptop, various usbs, antennas, wireless cards, etc). I need something that is going to hold up and not break the bank as I will probably pick up a new one as an 'early birthday present' to myself. I was just wondering what everyone else was using. Thanks for the input!