Dear @lalitk : A subjective learning approach and the objective one both have its own limits where at that limit point one approach needs a help by the other and then looking with both approaches we not only learn but in true can grow up in favor of our enjoyment and in favor of the quality levels of the MUSIC LP reproduction.
Normally the gentlemans that go with only the subjective approach to take decisions are just followers of other audiophiles that have same stand alone subjective approach with out be aware of that limit point.
With all respect I think that in this specific SUT issue your approach stays at its limit and with you just can’t elevate the quality analog reproduction in your room/system and my take here is that you need to show to your self ( not to other audiophiles including me. ) that open mind you are talking about.
If we mix subjective and objective know-how/skills each one us will take way better audio decisions always along that we are really investing our money instead to just spend it.
In this thread you already have almost all the objective true reasons why don’t use a SUT and why is better for the cartridge signal MUSIC a high gain active units.
R.