I haven't dug into the other threads here on this topic, but I have done a fairly thorough investigation of anti-skate and have some compelling experience with adjusting it.
First of all, just because you bought a 12 " tonearm, doesn't mean you're off the hook when I comes to anti-skate. Just watch J.R. Boisclair's video on the topic.
Second, as far as I know there is only one tool out there that will give you and accurate measurement of how much anti-skate you are applying, the WallySkater.
I have a WallySkater and have used it with several turntables and tonearms and I can tell you, without it you are just guessing.
Now, you will sometimes hear claims that certain tonearms sound better without the anti-skate applied. That may very well be the case, but the reason is not that that tonearm is defying the laws of physics and is immune to skating force. Rather it is because that tonearm has its own horizontal torque force and applying more is simply adding too much. Incidentally, this indicates that the tonearm has issues that should be addressed, such as tonearm wires that are twisted or stretched in a way that pulls on the arm.
My recommendation is to get a WallySkater, measure the anti-skate you are applying and get it to the recommended 18 - 20% of your VTF. Then make adjustments by ear using different records.
Classical orchestral records with complex passages are helpful, especially concertos where you have a soloist up front and the orchestra behind. When you have your tonearm set up well, and that includes getting the anti-skate right as well as other adjustments such as azimuth, the soloist will be more 3-D and the orchestra will be clearer and more present with the instruments in the back of the orchestra easier to make out.
This is just one approach, but it works well.
I've actually found that with both of my turntables, which are different and have different tonearms and cartridges, my records sound best with the anti-skate set closer to 17% of VTF, so a little below what Wally Tools recommends.
Good luck!

