I have a Sci-Con Aerotech hard case that I have used for international and domestic air travel several times this past year. It rolls very easily upright, which is actually pretty nice when trying to get it around in the airport and hotels. Also, although I was put off a bit by its not quite rectangular shape, I have concluded that the shape makes it less likely that the baggage guys stack other bags on it, because they slide off. I have watched them put in on and off planes several times through the windows at the gate, and they always seem to have it standing up a the end of the baggage carts, and handle it last. I also have experience with a Trico Iron Case that my wife has used this past year domestically. It also works just fine, but is more difficult to move around in the airport than the Sci-Con Aerotech hard case. On the other hand, the Trico Iron case costs about 1/4 to 1/3 the cost of the Sci-Con. Good luck! Mark