If you have a competant tuner both should net you very similar gains.... Its just a balance of Fuel, timing, and boost... Neither program has a special trick that makes it any better then the other....Some people just have product biases - like me - I'd tell you to get a hydra because it works very well with my green
But yea AP and protune should treat you right... Plus you can get the street tuner software which seems great (no personal experience with it)...