I've had excellent results with Velocity Dyad rims laced to Shimano Ultegra and LX hubs, 36 spokes. My best set of wheels has Ultegra hubs and double-butted spokes and cost about $350-400. However, I bought a much less expensive set with LX hubs and straight spokes (about $200 for both wheels off eBay) and it also has been trouble free, although a little bit heavier. I also have a dynamo front wheel with 32-H Dyad rim laced to a Shutter Precision hub and double-butted spokes that I use mainly for commuting but may take it on my next tour.