I've had poor luck with Open Pro rims. They tend to crack at the eyelets, and many of them have something inside that rattles and can't be removed.

Stans are nice weight weenie/race rims but not for a training set unless you're very light or live somewhere that has only smooth pavement.

What's wrong with the C24s? Shimano wheels are usually bulletproof.

32h wheels can bel laced 3x. Use thicker spokes on the DS for a stiffer wheel.