I just went through the same purchasing dilema for my Hed race wheels. I ended buying a pair of Tufo's based on recommendations on this site. I installed them last weekend for a race this Sunday. Have only ridden on them once but they appear to be good quality. I also liked the idea of the sealant which can be used as a hedge against possible flats. I bought a 19mm Jet Special for the front and a size 22 for the rear.
As an fyi, none of my local shops carried Tufo so I ordered from shop recommended on this site....
http://www.worldclasscycles.com. Great service and prices. They claim to be biggest Tufo dealer in US and have awesome selection. Also provided free glue and shipping with purchase of two tires.
Mike