My Windsor Clockwork from BD is of surprisingly high quality. Granted, my previous ride was a 10-speed that my dad bought from Sears during the Ford administration, but I don't think you'll be disappointed with a BD bike. You can still do a decent amount of "building" yourself; I slapped on a 17t Surly track cog and I'm in the process of swapping in some handlebars from one of my old bikes. You'll essentially be getting an SE Lager for the price of a Wal-Mart bike.