Hi Fran,
I've just got my own RX5 converted at the Bolex factory in Switzerland, the turret works just as before, ands the quality is as your would expect, just perfect. Perhaps the resale value of your camera may be better in the future with a Bolex H16 super 16 label on the side of the camera, if it is a 13 or 14 times viewfinder it may worth considering the slight extra cost. The contact is: Marc Ueter (www.bolex.ch)
The best lens are still the Switar Presets, 26mm,75mm and the 10mm. They all cover s16, however some, but not all, 10mm do not quite make it edge to edge. Another good lens to have is the Century West 6.3. and a nikon c mount adapter allows you to use 35mm still camera lens, but do not put any heavy Nikkors on the turret or you can bend it.
cheers Peter
australia