I originally bought the next size up, and found that although I really love it, I can pack so much into it that I hit the baggage weight restriction regularly.  Not to mention that it is a little much to carry if you can't use the wheels.

This model is a size down from that and I like it much better.  It has all the bells and whistles that I love so much about this line.  I am tall, and the handle is both sturdy and telescopes up to meet my hand.  I like it that the wheels are slightly bigger on this model.  Will write more later if I hit any durability issues, but I don't expect to.