I bought a set of Circuits early last season and really like them. The hubs are definitely better than what I had before (Ultegra on OpenPro rims) and seem to be better than what a lot of other people I ride with are using. I base this on (1) the Easton's are quiet - when I'm drafting someone and they start to coast, I wonder how they can stand all the noise their freehub is making. (2) I'm coasting faster on downhills and keeping up with people who should be pulling away from me based on our relative weights. (3) when the bike is on the workstand, I can spin the wheels and they keep spinning forever (or at least a really long time).
My wife insists that she pick out my dress shirts and ties so I don't embarrass myself, and my bike has a mix of black and gray cable housings based on what I had on hand, so I'm not going to touch questions of color coordination!