No connoisseur here either, but I am in dire need of a new one for work, as my current one is falling apart. I’m keeping my eyes open, in case I find one that matches these specs:
Durable as hell
1x compartment that can fit two 15" laptops. Chargers can go in a different compartment.
1x general purpose compartment for misc cables, SFP modules, connectors and other work related junk
1x compartment for a change of clothes
2x easy access pockets for things I might need to reach while on the go
2x zippable easy access compartment for things such as keys, battery bank, etc
must be small enough to count as carry-on with most airlines
I’m leaning towards getting one of those pilot backpack, as they’re built for people who are on the go.