Raphael Raffaelli bespoke.
Although, I have a black double breasted Canali that runs a close second:
The Raph suit looks quite nice. The Canali is really not in the same league, but people do tend to notice, and comment upon, DB suits a whole lot often.
From my own wardrobe, an A&S DB in Fresco 520 gets the most compliments. The DB cut stands out, and the 520s color is quite beautiful in natural light.