Close to getting the APR Stage 1 tune on my '14 2.0T Quattro:

1. Is the difference in power, torque, and acceleration that noticeable? (I can't stand the under 2000RPM dead zone in stock).
2. Is the engine noise/drone significantly louder?
3. Recommend Stage 1 or Stage 2?
4. What are the minor/major drawbacks?

Thanks!