Who Makes The Best Metal Panels

[Sarge]

Ok, I have had two auto body shops tell me two different things. One says that my rear quarter panels are good and that he can work with them and the second is telling me that I should replace the rear quarter panels. I am needing one new front fender for sure. So if I am going to be buying body parts, who makes or has the best metal for 1970 GTO? I know of AMES, OPGI (Original Parts Group), AMD (Auto Metal Direct), and NPD (National Parts Depot). What would you guys recommend?

Thanks, Trent