What gain should I have?

Tom...thanks for doing the math. I was still in a Turkey coma :-)

Here's the link:

https://www.vinylengine.com/cartridge_database_tools.php#VoltageGainCalculator

Many thanks for your opinions and knowledge.
Have samples listened to both gain options today and your suggestions on 41.5 match the impressions of my listening

Dear @titus1: As you said under tests conditions you can evaluate.

Now, for you the critical subject is the overload spec in the Primare that can be overloaded ( generating distortions. ) or not by the output level of the cartridge. Differences in those Primare gain settings can be generated by how good the AR V60 handle each gain.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.