I find the hardware on the Rimowa Topas and Zero Halliburton luggage to feel cheap. The handles, locks, hinges, everything feels like plastic.
I was set to replace my Tumi Alpha bags with either of those a few months ago and left the store without buying anything. The quality of Tumi felt 10x better IMO.
If you plan on checking Rimowa, the bags will eventually get destroyed (the corners usually).
*Note I am referring to the aluminum models, not the polycarbonate lines.