grado reference master

any one who has this cartirge is it much betterthen the sonata wich i am useing now is the master worth the extra money what about the reference reference all high output thanks
I own the Statement Master and it sounds magic!
I think the Reference series sounds as good as the Statement (0.4mv.)
is that your first grado is it better than the sonata i dont want to upgrade if i cant tell any improvement
I read it's much better than the Sonata!
I had also a Grado Prestige Gold .. a step less than your Sonata