The ThinkTank Airport SecurityTM V2.0 that I use or the slightly smaller Airport InternationalTM V2.0 rolling bags are both fabulous roll-aboard carry-ons: they are roomy and sturdy and will protect your gear if you are forced to check your camera gear on small aircraft. To learn more about or to purchase ThinkTank products, click here. If your preference is for a large backpack that can serve as your carry-on, they offer several great models here.
When you order merchandise totaling $50 or more you will be asked at check-out to choose an item as a gift from Think Tank. In May 2011 these gift choices include the luggage Security Tag (a $25 value), the Pixel Pocket Rocket–holds ten memory cards (sells for $16.50), and the Cable Management™ 20 pouch (also $16.50).