Age old discussion I know but MM or MC? Benefits?

Leonard the Cooper, funny kind of name : )... but he´s simply right.
Welcome to A´gon

The essence of a HQ cartridge: low moving mass of stylus/cantilever ass´y. I have known it for thirty years already.

Best regards,

Chakster, you got it all wrong. I never said the MM´s you just mentioned are inferior to MI´s mentioned by Leonard. On the contrary, they are as good some even better. This all comes down to TA´s and decks used, really. Audio life is hardly ever simple but audiophiles are using different equipment to evaluate quality/quantity differences in their carts, TA´s, preamps etc. The quality of one´s preamp and deck in particular is essential, not to mention a TA he´s using for a certain cart in question.
You are both right, in fact. Leonard´s experience tells an other side of the truth we are seeking for here.

And yes, the GLANZ MFG 610LX is a superb performer, in my system.

Answer noted. Don´t worry about the MFG 610LX. I think it was only for the European market thirty years ago but it´s superb nevertheless.