I got away from the branded dive rolling bags...too expensive and the quality and durability were just not there. I have been through at least half a dozen travel dive bags and finally settled on this one:
Eagle Creek Cargo Hauler 110 liter. The link:
CARGO HAULER WHEELED DUFFEL 110L
I have literally taken mine around the world a few times: Red Sea, Malaysia, Thailand, Maldives, Honduras, Belize, Bonaire, Mexico
It rolls great. It is tough as heck. It is mostly water resistant. I can get all of my dive gear in there with all the clothes and stuff I need for a trip.....OR: I can get my wife's and my dive gear in one bag with little room for anything else