Best Cylinder Head Porting Shop/Vendor- Your Experiences w/Results

I've used heads ported by myself, Dwayne Porter, Ryan at Shady Dell, and Indy on mine and customers' engines. I accept flow bench readings as partial truth no matter whose bench it is.
Be realistic with your goals, understand that good work is not low budget, and ask for referrals that race regularly on the track. Lots do average or below work, some do good, a lower percentage does really well, and some are damn artists. CNC means jack **** in terms of quality control. The value of it is because it has the potential to make good money assuming you have the numbers to produce to make developing the multiple programs needed for a given head and overcome equipment costs.

Those I would not use: Indy, Hughes.