A few years ago I wrote an essay for
www.ricksteves.com. For those of you who don't know him he is the PBS European Travel guru. So they sent me a $100 dollar certificate. With that I chose the wheeling suitcase with a telescopic handle. This suitcase fits the airlines requirements for check-in and you can put a lot of items as it expands. I love my suitcase and it has held up very well. The suitcase is easy to roll and it's easy to identify as it has the Rick Steves logo on the front of the bag.
I also like this bag because it comes with two bags which you can use for dirty clothes. There are many pockets to store books etc. And someone that needs to bring the suitcase on the plane can do so as it fits in overhead bins. I have brought it onboard and it works like a charm.
The newer bags allow you to hook a carryon duffel bag which Rick also sales.
The flight attendants were asking about my bag and they were so amazed and they said they would buy it. This is the same quality as Samnsonite and the price is right.