I just built a set with 40 spoke White Ind hubs (Phils are probably a better choice, I like the Rivendell phils in 36 spoke count). Dyad rims, and wheelsmith spokes. I dream of trying a mixed rear wheel of radial spokes on the non-drive side, and 3 cross on the drive side.

The touring 700C I rode a lot at tandem weights were XT hubs, straight gage spokes, and Alex DH22 rims. Seems to be bombproof.

What really makes for dream wheels is how they are built, and I pulled every trick in the book on my latest wheels (well three books and the internet).