I was at the bike shop a while back and overheard one of the sales guys (Toga Bikes in NYC) talking a customer out of buying a Colnago.

He was saying that their quality control process wasn't very good and pointed out something in the frame (I didn't see what) and told the guy that something like that would never pass the QC process from a company like Specialized.

I'm sure this bike shop is a bit biased though because everyone who works there rides on Specialized bikes (even though they sell Specialized, Cannondale, Bianchi, Giant, Colnago and other brands).