CXP23 rims, 3x-radial rear, radial front. I don't have too much experience to compare with, but the bike goes fast, and it makes me happy. When you pedal, the bike goes forward. Had a spoke back out on me, the other day. The rest of the wheel was fine, save that one spoke.
Rim quality leaves a bit to be desired.
The weld is ground well, but still, there is a bulge on both sides of the rim that is barely noticible when braking and easily noticed on a truing stand. Other than that, no major issues. It's a fine bike. It goes fast. It's a little bit harsh, but not too bad.