You get facelift 210bhp cars and facelift 225bhp cars... they both re-map to c265bhp so if you're planning to do that then I wouldn't be bothered which base car you use as a starting point as long as the mileage, history, condition, colour combo is what you're after.
If you're wanting a daily drive thats nippy but not mega involving to drive then the Audi is defo the way to go... if you want something to blast down the lanes, take on track occasionally, dont mind a slightly rougher daily drive then I'd go for the Focus.
Cheers,
Grant