Are you concerned with aligning/calibrating an advanced stylus shape?
I cannot understand using a conical stylus UNLESS it is specifically for the very old wide grooves, the opposite of your intentions.
Without a doubt, the lighter/stiffer boron cantilever, advanced microridge stylus shape (any shibata variation), lighter tracking force, refined LOMC technology of my VAS rebuilt AT33PTG/II Mono is my best sounding Mono cartridge. I expected some improvement over the elliptical, hopefully enough to justify the cost: if is far better.
good/better/best bonded, nude, pure, the various grades of diamonds may wear differently, but I cannot imagine you hearing any difference among the same profile shape, amount of contact surface will definitely sound better, last longer, and if a favorite is repeatedly played, cause less wear to the grooves.
Steve and Ray (lunch near me today) test/compare their own and customer’s cartridges on the same familiar content, they have perhaps 5 various pressings of some, and get new copies frequently. They learn and listen for differences.
Usually Steve plays a cartridge for you when you pick it up, sometimes he sends it, and waits for the customer to tell him, he is as impressed as I am with the one I had him build. He wants to come hear it here sometime soon.
He mentioned a few wood body cartridges he has/has rebuilt/likes a great deal.