Hi Jonathan,
Happy Holidays, and now あけましておめでとうございました!
Thanks, as always, for chiming in.
I have to agree with several of your points. Regarding tracking, I definitely agree. I also think that personal preferences on arm and arm-type make drawing conclusions "too easy". I would expect that certain people who like certain kinds of arms would find that MMs track a LOT better than MCs, but I find for a great deal of music that the ability of a cart/arm combo to track the cannonball shot of the 1812 Overture is not a relevant determinant of how well the cart does with other music). However, I think your point about the phono stage is most important - both in terms of absolute quality of gain stage and how well the phono stage deals with the nasties that come from downstream. While I liked great MCs better than many of the great MMs with previous phono amplification, it took a great headamp for me to learn how sublime a great MC could be.
As you know, I am a big fan of the JVC L1000 MC (and I even referred to it obliquely here on Agon a day or two ago). I have not found an MM (and I must admit to more limited experience with great MIs) which can beat the JVC when the JVC is matched with a great headamp.
That said, for many people out there, buying a Connoisseur, an Essential (Raul's phono stage), or something similarly spendy is out of reach. I don't have either but adding a JVC L1000 plus an HZ-1 and a phono stage to do both of them justice, while relatively speaking, a bargain in my eyes, is also beyond what many people want to deal with (in terms of hunting them down, and mentally dealing with the fact that they are 30 years old).