I got one of
these from the Sydney Luggage Centre in Mascot, Sydney (yeah I know, not very close to you.)
Pros:
It has wheels! so you don't have to lug it everywhere.
Fits four jepp binders or equivalent, or two jepp binders and a laptop in its own laptop bag.
Has a fold out expanding file section.
Plenty of nooks and crannies for pens, passport, wallet etc.
Cons:
It is fairly big (fits snuggly in a Dash 8 flight bag holder.)
It doesn't have a combination lock but rather some slots that allow you to use padlocks, I don't care because I never lock bags like that, but you might.
It was around $140 Aus (discounted from something close to $200) and is made of "ballistic nylon", it is not leather and doesn't try and look like it is. The Sydney Luggage Centre give a %10 discount for flight crew, you may find somewhere near you that has a similar deal.
I've been very happy with it so far.