As always depends. If you are a finger shooting (shooting split finger), shooting a deflex-deflex or relfex-deflex compound like sold 10 years ago, you want positive tiller measureed at the limb pockets. Or you could tiller tune for quietness and nock hieght. Shooting 3 under changes this evn more but you can have less positive tiller.

If you are shooting a parrellel limb bow like todays bow with a release, you want even tiller. If shooting a single cam, you cannot measure tiller other then how many turnes.

I have found that a 1/4 twist here or there can make a bow more quiet. But remember, each time you change that tiller, you changed optimal nock placement, so its not just a simple twist.