I am trying to find a carryon (2 or 4 wheels) that will double for both US Domestic and International. From what I see, most US Domestic is 22x14x9, while International tends to be slightly lower but wider such as 21.5 x 15.5 x 9. So taking looking for a case that is 21.5 x 14 x 9 would seem to work. There seem to be very few that fit the bill. The only one that I see is the Travelpro Crew Global. I know this assumes airlines enforce their hard rules but are there other options that fit the bill? I like the Walkabout 5 from Macy's but it seems taller than 21.5 once external measurements are taken into account. It donesn't have to be Travelpro, just anything that would work.

Thanks