I haven't used it yet but am very pleased with the design and sturdiness.  I do wish it could be a bit larger but this is as large as United allows and that is the trip I bought it for.  The wheels seem fantastic, it's first trip will be to Africa and back....we will see how it holds up.  I will try to remember to update this review after the trip.
I am back from a trip abroad.  This little suitcase did a great job and never fell over while I was wheeling it around everyplace.  The only problem I had, I filled the outside pockets and the bag got rather large.  I had to have others help me stuff it into the small overhead bins that United had on it's international flights.  I had no problem on Brussels Air, United just desperately needs to enlarge it's planes for interntational flights.