So I put about 20 miles on with the aFe... throttle response is definitely better, no question. The transmission seems to have smoothed out, I have no idea why. The engine sounds great! Seriously when you get on it, the engine roars... but when light on the pedal the sound is exactly the same. You can hear the intake and turbo more with the windows down but with windows up, not much difference, engine just sounds more aggressive. There feels like a small gain at the low end and a little more pull at the top.
All in all, I think its worth it. The overall smoother drivetrain, the engine sound and potential slight improvement in MPG are worth it to me!