Quote's from Magazines :
Car Issue 564 Focus RS, Renault Megane R26R, VW GOLF GTI : "The Golf isn't the fastest or most powerful car here, nor even spectacular value for money compared with it's real oppoosition the focus ST and Civic Type R. But it doesn't do a single thing Badly."
What Car August 2009 GTI Vs lots of stuff including clio 200Cup and Focus RS it came 1ST : "how can you resist a car that one minue Does everything you want of a hot hatch one minute yet has the gravitas to pass as a business car the next and is built as though it's creators lives depended upon it ?"
CAR Issue 568 PCOTY : "Better than the suprisingly quick Impreza 330's? if your confused, remember that lap times are just part of the picture here etc... Supple suspension,well contained torque steer, the best driving environment etc.. Sweet engine loves to rev"
So basically it's the best all rounder according to the magazines. So if that's what you want then it's probably worth the extra money.
If you want an out and out racer with more power and you are willing to compromise on quality, space etc.. then maybe look elsewhere.