My dyno plot is attached below. After looking at this, Dan Harman at Harman Motive informed me that Cobb's got it dialed in and a Pro-Tune would be redundant!
to Dan!
As for the Stage 2 - I highly recommend when you compare what you spend and what you get. Not that the car was slow to begin with, it seems much more responsive in Stage 2. The car sounds better and pulls harder.