MM Cartridge

For new cartridges (in addition to what you have already mentioned), the upper end clearaudio MM's are also very good. If you're not afraid of purchasing used...
Grado Signature series
Empire 4000 DIII
Empire 2000 Z

If you have a month or so... Check out the HUGE MM thread Raul started here. There are a lot of old MM/MI carts that are really good.  

If you can still find one, the JICO stylus will make a shocking difference to your Pearl, and may be enough to keep you happy

Soundsmith , Vessel Cartridges , Goldring 

Post the mass of your tonearm first, because recommendations here are blind, some cartridges are not compatible with your tonearm (if a compliance is too high or too low). 

The arm mass is 10.2 gm