It'd be this one. Kind'a cool looking for a roller skate.
And if they do end up slapping in that 230HP ecoboost 2.0 liter...I'll be in line to get one.

BTW- this car was spotted in the states doing some testing.
more info:
Spied: EcoBoosted Ford Fiesta 3-door caught testing
Glad to see Ford bringing some really cool stuff to market recently.