Not sure on how many have the technology but Mike can make a custom master from his computer and grind almost any cam for any engine. Don't many still have a finite selection of masters to grind from?
I know Comp, and I'm sure others, have high dollar cnc machines but I would think their shelf cams get ground on those. The old Bercos are still used for custom grinds. They are as good as any for most applications.
I do know that most high volume cam outfits farm out much of their work to the two big OEM cam grinders in Michigan.
I just sent an email to Mike Jones with some info on my heads that I just got from the PO. Just some accurate cfm numbers which may change the grind of the cam.
It's human nature to like the stuff you buy...no one likes buyer's remorse. Like George @ Camcraft Cams sez.... The best cam you ever used is the one that's in your engine right now.
