I know the Khard 30 isn’t necessarily the most prevalent pack on the forums, but I think it is . They’re doing a limited run in black.

http://soldiersystems.net/2016/07/15/i-spy-with-my-little-eye-black-arcteryx-leaf-khard-30-exclusive-from-tactical-distributors/#comments

I may end up picking one up, just because of the cool factor.