Colorado Cyclist (
www.coloradocyclist.com) sells very good "handbuilt" wheels with your choice of rims, hubs and spokes. I assume they are machine assembled but hand trued and tensioned. My experience with them has been excellent. My current set of Mavic CXP-33 32H rims on Campy Chorus hubs with DT 2.0/1.8/2.0 spokes laced 3X now have 18,000 miles and have never needed any attention. An earlier pair built on Dura Ace 7700-hubs went 28,000 miles before the brake tracks got too worn to trust and they remained true the entire time.
These wheels aren't cheap but they are very durable and worth the slight cost premium.