Good moving magnet or cheap moving coil

I want to buy a new cartridge to replace the Sumiko BPS in my LP12.Although the BPS is a moving coil it never had any magic in my system.Rather thin sounding with woolly base.
Should I go with a good moving magnet (such as the clearaudio aurum beta) or another high output moving coil(which one?). Budget is about $600 tops.