A good friend of mine rolled up for a visit yesterday in her B8 Audi S4. So much attention has been focused on the launch of the turbocharged M3/M4 that it’s easy to forget that the S4 is still a very good choice in the sport sedan market. If you believe that all Audis drive the same with terminal understeer, you haven’t been behind the wheel of the most recent generations from the four rings, whose clever computers, suspension and differentials have left them turning as well as they go. And they look as good as they go too, with signature top-tier interiors and lovely details. Audi recently offered a brief run of classic Nogaro Blue Pearl Effect on the S4 too, with a special edition that bathed the S4 in the purpley-blue. Today I have two such colored examples to look at – which is the one you’d nog off to?