Its good to see that others (Raul who I trust) feel it best to experiment as well. I was afraid of the compliance Police, and that I'd get a ticket for non-matching!
I will add that I do have to disagree with the above poster who believes that mid/low complinace cartridges will lose micro dynamics on a low mass arm. Just not so on the BW in my opinion when comparing to the Walker Audio arm or DV-505 (my two highest mass arms).
I remember we use to ponder this (argue) on the old rec.audio.highend list. Boy, those were the days.
My best,
Peter