Think people seem to have the blinkers on here when comparing GT to GTD...
Base GTD v base GT is no contest, 30bhp for a start is noticeable from the off, plus the exhaust looks cheap as hell on the GT.
Fair enough you may get a few with higher spec for decent money, but they will depreciate more and be less desirable further down the line.
If you cant justify a GTI for whatever reason, buy the GTD and you wont regret it...
If I would have settled for a GT I know I would always be annoyed seeing a GTD driving past.
Good shout on the Leon FR though, I tested one prior to GTD and they are as good in all but interior finish, but loads cheaper!!