I totally understand the concern over prototype vs production quality, and as a collector I can empathize. I certainly appreciate the enthusiasm over the subject. Heck, if it weren't for that difference I never would have started customizing only to eventually end up as a prototype painter myself. But when you understand that it's really the difference between an artist's passion vs a factory employee or machine, you start to accept it for what it is.
I'll tell you this, too. Sideshow's design team members pay regular visits to China now, and the production quality is getting much, much closer to the prototypes. I am personally extremely impressed with the way the Gandalf the Grey PF production quality came out. I had to buy it because it looked so good. I wouldn't dream of repainting that one. It's amazing. I've also seen prototypes next to production samples lately, and I honestly have to ask which is which sometimes.
My only issue with the paint (and my only problem with the figure) is the beard. I wish it had more depth. With ambient light only it is all the same color grey with the exception of the hair right on the face. With overhead light it is better, but only because of the shadows.