Roval Traverse EL Wheelset:
http://www.specialized.com/us/en/bc/SBCEqProduct.jsp?spid=47223
Just picked up a set of these, the 2010's, (used) like new for $385
Just gotta say I
love these wheels!
I swapped in a 12x135 rear axle for my 2010 Reign X and installed the 36p ratchet upgrade at the same time (the rear hub is basically a DT 240s) These are the lightest/smoothest rolling hubs I have ever dealt with - just awesome!
I replaced the blue tape (seemed flimsey to me) with one layer of Stan's yellow tape, and the Specialized tubeless valves. Running them with a 2.3 S-Works Eskar on the front, and a 2.2 S-Works The Captain on the rear. Tubeless, with Stan's sealant.
I was running the same tires on Hope/Flow's (Hope Hoops) and I don't know if it's the lighter weight, smoother bearings, or if the rim width gives the tires a "perfect" profile, but the Roval set just grips, and flies - my favorite wheelset to date, and I
really like my Hope Hoops (I still think the Stan's Flow rim is one of the best trail rims.)
I've used Mavic 819 & 823 rims, Hadley & Hope hubs as well.
If I were building a custom wheelset, I'd use the DT 240s hubs again.