Help with Wheel Choice... Mavic Ksyrium Elite S vs. Wheelbuilder built Hed Belgium C2 with DT Swiss 350 hubs vs. Fulcrum Racing 3, vs Campy Zonda

building a new road bike and am torn between the four wheels noted. The Hed wheels are $300- $400 more than the others…
The wheels would be for both training and road racing. weight is close for both.