Dear Dave: An open question like that give you a " thousands " of answers like " thousands " of cables are out there.
I try several tonearm/phono cables over time looking for a neutral one and not for a cable that compensate for deficiency somewhere in my system, after many cable test I stay ( for a while ) with three cables: Harmonic Technology, Analysis Plus and Wireworld ( the two formers are silver/cooper blend conductors and the other full cooper ).
Today I'm using either the Harmonic Technology and the Analysis Plus that I find are cables that IMHO does not introduce almost any " signature " all over the frequency range leaving to pass the cartridge signal with out almost any alteration/change, for me this kind of neutrality is a must to have/try in a tonearm/phono stage to preserve in a better way the integrity of the delicate cartridge signal and to know/discover too if everything is fine on the system performance.
I don't like the cables ( anywhere ) that are out of neutrality, I don't like any cable that " help " to compensate errors somewhere in my system, of course this is only my opinion and like almost always is system dependent and according to our know-how level and priorities.
Regards adn enjoy the music.
Raul.