I owned an '11 CC Sport, but traded it in on my MkV GLI. IMO, the 2.0t is inadequate for the CC...simply because it's bigger and weighs more than a GLI or GTI. Of course, a tune would change that, but I didn't want to go that route because I leased the car.
In a nutshell, I enjoyed the CC for a while, but I got bored with it. Now that I'm back in a Stage 1 MkV, I'm happy again.