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: 2006 Mazda3 s GT Hatch: 115k, Gray, Manual
Gone: 2002 SVT, #1654
Hers: 2012 Focus Ti Sedan: 55k, SGM, Manual