I have Odyssey mini 18″ now, they are OK. Have some bad experiences with the bearings dying fast on a friends wheels.
Heard bad reports on the Sinz wheels, Answer is expensive and cassette.
I want to build a light 20″ set for him to move up to and stay freewheel because that is what I am used to and have tools for. My wheels are new so I am not switching anytime soon.