Herbert Cams
A good friend of mine builds pretty expensive race engines, $25,000 to over $100,000. He says Herbert cams are really good. He said they are a little cheaper because they don't spend a lot on advertising. No names mentioned, but some companies spend a huge amount of money on advertising and Herbert doesn't.
By the way, they invented the roller cam years ago. I am prettys sure they make their own cams.