I would have to recommend Delta Cam (800-562-5500) because I was a testbed for his grind. He was professional, friendly, and generous to deal with. Shipping was very timely as well...
As for 3tech, I'm sure his grind is equally effective from what I've read on teamswift
Here's how I came to know of Jon Bodwell, owner of Delta Cam:
View topic - XFI CAMSHAFTS • 3Cylinders.com