@tigertiger you left your comment in a very old thread from 2012
You can upgrade your F9 with styli from F14 series and it will be far better than Shure V15. The reason is Boron and Beryllium cantilevers designed for F14 series by Grace in the 80's. Another reason is the MicroRidge tip instead of Elliptical on your Ruby. Actually the generator on F14 also superior in comparison to the F9.
I still have my F-E Ruby that I bought in in 82, or so. Mostly I transferred vinyl to cassette, so it doesn't have a lot of hours on. It replaced my V15, when somebody broke the stylus, I never replaced (I regret that now!).
You can upgrade your F9 with styli from F14 series and it will be far better than Shure V15. The reason is Boron and Beryllium cantilevers designed for F14 series by Grace in the 80's. Another reason is the MicroRidge tip instead of Elliptical on your Ruby. Actually the generator on F14 also superior in comparison to the F9.