I voted for transformerzx3. Why? Because turbo!
Each of these cars looks absolutely amazing, they're all very distinct and well-modded cars. For me, it was a toss up for appearance, mods/work done, suspension, etc so I just gave the vote to the car with the most go-fast-ness!
Mine: 2008 Saab 9-3 Aero SportCombi XWD: 82k, Black, MANUAL
Gone: 2002 SVT, #1654
Hers: 2010 Focus SES: 70k, Ebony, Auto, Moon and Tune