I build my own wheels as well. I use 32-spoke Velocity Aerohead rims (OC in the rear). Front is laced radial and the back is three-cross. The front hub is a pink Chris King and my rear hub is a PowerTap SL.

If I were to buy a set of wheels out of the box it would be the Mavic Ksyrium SSL -- unarguably the best pre-built wheels on the market for road or cyclocross and a killer value.