If they were same price i would have the MK6 over its looks but when it came to the decision to but a 2007 ED30 for £14000 with 16000 miles or the 2009 MK6 gti with 18000miles for £21500 then there was no difficulty in buying the ED30 .
I think the ED30 is better looking than the MK6 as colour coded.
The rear lights on the MK6 are horrendous imo and grille at front not as nice either.
The MK6 Gti is a slight improvement over the Mk5 as an all rounder and the interior is better. Ultimate MK 5 = Edition 30 with DSG ( I have a manual and now wish had DSG) ultimate MK 6 - R with DSG.