To me, it sounds like nothing is going to make you happy.
Every car will have its upside and its downside for every driver. I have found it impossible to find a car -- for me -- that combines power, sophistication, and comfort all-inclusive. The closest I ever got was my 2002 Bonneville SSEi, but even that, after time, started to get boring. I had one of the fastest Mustangs around in 1996 -- a Boss modified by Larry Shinoda himself -- and by 2000, it had to be sold.
I used to tell my customers -- forget what magazines say. Forget what everyone else says. Drive what you want to drive, and there is no doubt that you're going to have to give up SOMETHING in the purchase of a vehicle. No vehicle is going to make you 100% happy.
That being said, I have driven the R20 and there is a vast difference between it and the GTI in power. However, everything else is the same. You should probably go drive one, because you're going to get very different answers from everyone.