recently purchased a 29" Rimowa Limbo. Moved it around the Milan Central station from one side to the other side, stone and cement roads, 10 minute walk, and it was very easy. Then the case went to Venice, moved it thru from the airport to the water taxi station, a 15 minute walk, then thru a single wood "rail" onto the Alilaguna water bus, then out of the boat, and walk to the hotel. Very easy. I was also moving a Travelpro crew 21 inch bag, and I can tell you the Rimowa is much easier to move.
After this experience, I am buying a 29" Topas alu version in the near future and will retire all my Travelpro soon.
I also have B&R Baseline carry on, Hartmann PC4 carry on, and I like them also. But Rimowa is top on my list now.
Ocean