I'll have to side with the little-or-no-difference crowd, where the S80 bits are concerned. I pulled them out because I didn't like the added complexity.
New Springfields, except for perhaps the Trophy Match, TRP and other high-end models, are built entirely in Brazil. They used to be fitted & finished in the U.S., but no more.
I saw a new Auto Ord, and didn't think it looked one bit better than the old West Hurley guns.