Dear Atmasphere: Now I understand your statement.
The problem with " open " questions ( like this ) is that any one of us speaks of what are our experiences and in our systems and many times we think that the " best " is what we have but in the tonearm case that " best " is almost impossible to find in a precise way. Let me explain:
to say that the Phantom is better than the Triplanar ( it is only an example, I'm not saying it is. ) means almost nothing, maybe the Phantom is better with a specific cartridge in a specific audio system but we can say too that the Triplanar is the best with a specific cartridge/system. In either case we can't assume ( for sure ) that the Phantom/Triplanar is better than the other one.
The fact that a tonearm/cartridge combination is one product/item not two items makes things complex.
Now, IMHO even trying to take the tonearm as a stand alone item makes things only a little less complex but does not resolve the whole " best ", let me explain:
to obtain a winner we have first to " write " the standards/factors/targets " ( technical, subjective ones, look/appearance, execution, build quality, et, etc, ) against be " measured/challenge " any tonearm. Where are those standards " approved " or where can we find it?.
Imho, does not exist and IMHO too almost everyone of us have our self and unique standards. The Tom_mackris standards are different from yours/me or Syntax/Lewm ones.
Of course that exist a " best " but first we need those " standards " to qualified about.
I almost always give my opinions on audio subjects with first hand experiences and always with almost the whole characteristics of the items involve on a specific subject.
Now, I know that each single opinion from any person is welcome and was made triying to help to the person that ask. IMHO the person that ask ( sometimes ) has a very hard " task " to choose the right/better answer because ( sometimes ) some of the answers were/are even contradictory but this is what is an open forum like the Agon one.
Regards and enjoy the music.
Raul.