Ring up and ask any VW dealership. Just get the standard stuff.
Unless you've got a massive (i.e VR6/S3/TT engine) then its pointless upgrading brakes and then therefore brake fluid so its got a higher boiling point.
If you really want to get some 'special' stuff then its something like £9 per bottle and EBC do it.
As long as you change your brake fluid every 2 years then it'll perform perfectly. I don't even use fancy stuff!
