I just ordered a lowepro flipside 500 AW to fit my gear for a trip to Europe. Like that there's no access from the back and I can swing it around to get to my stuff w/o taking it all the way off. Thought about a pelican, but I'd not want to drag that around Paris and Germany. We'll see how it works out, I'll have two bodies and a bunch of lenses, flashes, etc. what ever fits. For the airport I have one of those little luggage rollers that'll carry my backpack, my kids backpacks, my wife's bag. Worked great the last couple times and is probably the best $30 or so I ever spent on anything ever 