The DA 7850-CLs are really nice wheels, where my money would go if I was after new road wheels.
FFWD do some good value properly light wheels, but they go to tubs.
Can anyone calculate some silly lightweight hubs + revolurion spokes + stans crest rims?
We've had this conversation, Crest rims are disc specific and thus not particularly useful on the road. I'd also be concerned about pressures. You could possibly use the old 29er 355s, but that would be a bit pointless, just wait for the new ZTR Road rims.
I had some Aeolus 5.0 clinchers, and although they weren't that heavy at 1600g, they felt slow and sluggish on the climbs. I'd be really interested to try something like FFWD F4Rs, 40mm deep and 1200g-ish. Or the Reynolds/Lew Rzrs, or the new Lightweight Standard III Clinchers, both of which are properly nuts.