Hmm...hard to pick just three. I'd say Tony Bose, Reese Bose, and then any one of the following: Eugene Shadley, Bill Ruple or Ryuichi Kawamura.
As for production stuff...I have no idea. I've only had a few Case and Old Timer slippies that were production. The old Case XX I have is quite nice, as is the new yellow handled small trapper. The other few I have are less impressive.