This past weekend:
2011 IS-F: nice car, very fast, great engine sound over 4k, nice interior.
2012 IS-350, regular and F-line- decent power, but too soft
2009 M3 Coupe- now we're talking, great handling, power and luxury, I think we have a winner
2012 Infiniti M- wife couldn't get past the looks, never test drove it.