I can only comment on what I did with my VW GTI.
I had the option of a full dogbone mount or inserts. I bought the full, and after a month took it off and went with the inserts.
The inserts to me were a good compromise and didn't make my CD player skip @ low RPM take offs.
What made you change your GTI? I just got my ms3 3 days ago, but I was looking more for a GTI, just couldnt find a good offer so went with this nice ms3 grand touring i found.