I just want to say that John has been outstanding and extremely supportive. I am pretty new to car modification in general (And ECUs in particular), and he walked me through everything I needed to do. Then I called with one more question and woke him up, so I feel horrible.
I can say that the tune is everything he promised it would be. The torque dip is almost non-existent now, the car accelerates quicker, and you now have the freedom to shift when you like and not worry about the engine bogging down. The extended red line lets you hit 62mph in 2nd gear, which is very nice.
Overall, I am very happy with both the service and support. John earns every penny he makes.