Of the 3 factory offerings on Andrew's site, I selected the 1 that contained the fewest & least objectionable sins to my eye. As always, others sensitivities may differ from mine, so you should carefully research each factory's offering & make your selection. Of course, if you are frankening your watch, everything but the case can be corrected with gen parts.
But, as I said, out of the box, these are all so accurate that it is difficult to call them fakes, at least in the way we have traditionally classified non-Rolex-built Rolexes.
1 month ago, I set my franken 116520's time to our server's clock &, as of today, it is still within 1 sec of the server's clock. I continue to be amazed at the technical brilliance of the 4130's design & the Chinese ability to clone it for a fraction of the original's cost.