Rimowa Salsa Air - very light
Since I bought Rimowa Salsa Air in Germany, I have not carried any of Tumi, TravelPro, etc.
Rimowa is very light and the wheels work so much better than Tumi.
Best of all, they fit overhead on CRJ200, CRJ700, CRJ900, etc.
I could not fit were very small CRJ100 or ERJ145 planes to date.
The hard carrying case is good for rainy weather or dirty environmental conditions in some places.
I usually have an extra light weight parachute material bag from Muji (I canlt see them on their US website) but they are in store in NYC for those extra papers, ear phone and in-flight comfort items as my personal bag.
And Rimowa Salsa Air carry-on bag, surprisingly, fit more than it looks. I have traveled for a week with Rimowa carry-on only. I do use cubes for separating items and roll vs. fold.