AEM EFI starting & tuning (Gen3 426)

There's a guy in South San Francisco that's pretty good with tuning Hemis. Depending on the car / customer, he knows Diablo Sport and HPP real well. I talked with him about the AEM (a long time ago) and he wasn't concerned about it. Said tuning is tuning, AEM fully programmable is just another venue or avenue for doing so. For that matter, at that time, AEM wouldn't have ANYTHING to do with the MP AEM unit. Told me I had to call MP for any questions. Geez...