I am not baller enough for a Rimowa either, but use a very high quality Heys that was great deal from the Bay and was happy enough with it that I bought a 30" version for when I need to check a bag. They don't seem to have the exact model listed, but they have several on sale right now...
HEYS | Brands | Hudson's Bay
I am in the minority but I can't stand 4-wheelers in smaller bags as I find instead of rolling along they often want to tip over as they get stuck on the smallest bumps in the road. My 30" is a spinner but the carry on is a 2-wheel and that's ideal for me - they are stronger, lower profile, and 2 wheels less to break... but that's just me!
Mark