Put another way, if I could wave a magic wand right now and turn my original iron 428, which I am happy with, in to an original iron 427SO, and every other aspect of the build stay exactly the same, with no change in any performance characteristic, or anything else in any way, I would certainly pay the magic wand fairy $3k for that, and, if she caught me in the right mood, I might go to $5k... but I don't think I'd go much higher than that.