I live and die by my TravelPro suiter rollaboard. Sturdy and affordable and fits in the smallest carry-on template. The problem with some of the bigger Hartmann's and others that folks are talking about here is the inability to get them through some luggage templates. You may find yourself forced to go back to the United ticket counter to check a bag that would otherwise fit on a Continental flight. I never know when a last minute change occurs that necessitates a change in a/l at the airport. On the other hand, if you regularly check luggage then this doesn't matter. (I avoid checking luggage like I avoid rude people and tax audits)