The S5 is probably my favorite Audi on the market right now, even more than the R8. Mind you I've been a fan of Audi since the first time I drove my uncle's A4 V6 Quattro back in 1998. Fantastic cars back then, and they are improvong so much every year with thier evolutionary styling.
I live the M Coupe, but the front en of those cars always seemed out of place to me.