I have used 2 Moonlite focusers now - one with motor focus and dual speed, the other single speed. I was not as impressed as I was lead to believe I would be, and in the end put the original R&P from Vixen back on.
Is FT any advancement over Moonlite? I know the price is an advancement

I like the R&P on my Vixen, VERY much, but I would like the benefit of dual speed for those minute corrections to get the FWHM right down.
Bit dismayed when I contacted FT about a replacement - they told me because the Vixen Fl102S is made in China, that they did not do a pinion replacement like for the Takahashi. I then had to inform them that the Vixen FL102S is 100% Japanese made.
Looking at the micro pinion replacement for the Takahashi's, it APPEARS as though it may work on the older Vixens. I'll have to do some research to find out. Or maybe just go for the Vixen dual speed add-on, though I think it needs modification to fit the older pinion rod.