I just agreed to sell my 12,000+ mile Powertap wheel! Need to find a nice matched pair of wheels to replace them with- preferably Zipp 404s! Who's selling? Has anyone ever heard of 50mm "Blackwell Research" carbon wheels? There's a matched pair on Ebay I think I can get for $1250 or so.. I think it's far eastern stuff rebadged here in the states, but what isn't these days???