My entire family flies with Tumi and we're always happy with them. We have some older versions, and some new, and we have certainly gotten our money's worth. They are very durable, sturdy, and look good too!
My only issue is that Tumi seems to push it with size- alot of their "carry on" bags are 22" (or more), and on some planes, this is just too big. A while back they started to make the bags wider as well- makes sense, but I fly on Air Canada's Embraer 190's alot, with small bins. All bags have to go in sideways, and anything over 15" wide does not go in- period.