I selected a 5.11 All Hazard's Prime after a few weeks looking, and looked at a lot of larger backpacks around airline maximum carry-on dimensions. The AHP is within carry-on dimensions for UA/AA/WN and DL didn't complain last week.

I've had 2 15" laptops w/chargers in it, variants of most of the list in post #1 (chargers, etc.) but not the exact list, but haven't tried clothes yet, but don't see it as an issue for a day or two.

There is a thin 3rd compartment near the straps designed for a hydration bladder which holds a pad of paper, so might be worthy of a file folder or two.

A comment in the online reviews for this pack is having to unclip the two side clips to get at the compartments but I see this as a plus to back up the zippers. In practice, I usually only have one laptop in there in a neoprene sleeve and can get it out and on the belt w/o undoing the clips.

It's military looking so I have no idea how that appeals to your aesthetics.

http://www.511tactical.com/All-Produ...-Backpack.html

List is $200, available on Amazon for less than that.