I think I have only shaved with the new grind ones. They are really nice shavers. Some have said that the actual NOS ones are a little bit smoother - probably due to a better grind. But the new ones are by no means junk; I really like them and have one in my "rotation."

Also, the scales on the new grind ones are put on by whoever finishes the razor, or maybe even by someone after that, so they vary in quality. I have seen some of the ebay ones that had rather rough pinning, some in wood that looked really terrible, and others that are great. Seems something of a crap shoot. The one I have was finished (scales and filework on the spine) by Robert Williams (at least that is what both Lynn and Don guessed when I showed it to them), and the fit and finish is top quality.