Drove them both today at the Ecoboost Challenge event being held at Golden Gate Fields in Alameda near San Francisco. Drive time was limited to a couple of laps on a course set up in the parking lot. Fiesta feels lighter and with less low end torque. For the money, the Fiesta ST will be tough to beat. My only real complaints are lack of a two door hatchback in the US and rear camera is likely a year away. Don't know how solid beam axle affects real world driving. Ford personnel still can't say if Focus RS is a go or no go. It would be a shame for them not to outdo both the WRXSti and the Mitsubishi EVO!