RunYun - At the risk of sounding like a retrogrouch, I recommend the following. There's a good selection of quality 400 gm or a bit lighter clincher rims, sub 350 gm hubsets, light butted spokes (14-17's are good, 15-16's are better, and 15-17's are best), and alloy nipples. Find a good wheel builder (or do it yourself), get the parts you want, and have a custom 32 hole, 3-cross wheel-set built. They will be very light, very strong, very fast, very easy to maintain, very reliable, and will ride very nice; and if anything less than the worst happens, you'll be able to get home on them. Good luck.
ps: Mount up some Conti's for the ultimate finishing touch.