On paper the 2008 Lexus IS-F stacks up well against the M3, not to mention the Audi RS4 and Mercedes-Benz C63 AMG. In the metal, the IS-F's appearance is polarizing ("F stands for FUGLY! The car looks wack," said Juzef on an M3 message board we surfed recently), and much of the criticism centers on the car's bulging hood and distinctive fenders. The IS-F's big nose might make this car an icon or a joke. This will depend in large part on how it performs.
Above taken from Edmund's Inside Line IS-F review