Hi Amr
I use the Expedition case and Banar Bags depending on the luggage and weight restrictions. My oldest expedition case has the zips rusted out and my newer one is heading that way too (metal zips and salt just do not last), but the Velcro lid keeps working fine. With the groups I travel with, quite a few of the guys take the expedition case as carry on. The only time we hit a problem was on a smaller 737 where the overhead lockers weren't high enough to fit the case, but I believe the dimensions (combined length + width + height =105) are dead on for max carry on size on many airlines, though some also specify max a height and width as well, which may get you into trouble.
I love the Expedition case because it can sit on the deck all day long with waves and water sloshing about and everything stays dry. Where I use the Banar bag is when I'm really tight for weight and space or I need a proper zip up closure. It is the only half decent bag I've come across with quality plastic zippers - every fishing bag should be built with these!
Cheers
Duncan