Fiesta ST and Focus ST would both be fun options. Fiesta will be a little cheaper to buy, insure, and operate (cheaper tires, better mpg). The Focus ST can be a bit of a handful with the torque steer for an inexperienced driver. The Fiesta ST would be a bit easier for a younger driver, in my opinion.
And you can still go nuts like [MENTION=10534]P40E[/MENTION] and have a 12 second ride.