koetsu

Curious about this myself. However, the thing to remember is that the Platinum magnet models all have significantly less output than the non-platinum models...which may discount the Platinum magnet models if your phono stage cannot support ultra low-output MC's.
I really do believe that the output of the cartridge is something that many a'philes ignore- and then wonder why their particular model sounds less "alive" than the cartridges that are more suited to their particular phono stage ( output wise!!).

I recommend a moving coil step up transformer (SUT) for use with any low-output (less than 1 millivolt) mc cartridge. This will give you the needed gain and sound much better than a typical high-gain phono stage. And a much lower noise floor so you will hear more subtle details present in the recording! 

A used Koetsu Black would be a good budget choice. Or a used Supex 500 (same designer as the Koetsu). Either one used with a good SUT will provide plenty of sonic realism from your favorite LP's!