Klein Q Pro? I don't know - this is a strange question to me b/c I've always been an equipment geek, and felt like there is NO good stock bike.
The best bike is built up from a frame, brakes, shifters, derailleurs, bar, crank, pedal, reflectors (just kidding), wheels, hubs, tires, seat and post, etc. that each represents the quality/weight/style combination your after.
And each on is probably from a different manufacturer to be max-cool!!!