When I first got my Aries2/JMW 10.5 I spent too much time concerned about proper VTA for various vinyl masses, but in the end settled as follows:
1) There is a "general optimal" setting that I use for everything, regardless of record mass except
2) Even for two or more recordings on the same vinyl mass, sometimes I have to adjust only because the cutting angle was what was varied. So I make a note as to what settting is good for that recording and attach a sticky to the inner sleeve to remind myself of the exception and the setting.
1) There is a "general optimal" setting that I use for everything, regardless of record mass except
2) Even for two or more recordings on the same vinyl mass, sometimes I have to adjust only because the cutting angle was what was varied. So I make a note as to what settting is good for that recording and attach a sticky to the inner sleeve to remind myself of the exception and the setting.