I think that what helps bounding the three different epistemologies is “reflexivity”. Doing so, you (as a researcher) could mark the departing point, not only from the pre-conceptions in theory, but also the ethical stand-point (”the good”) - let’s use Plato’s definition. With reflexivity you can put your own experience in the text (and the experiences from the others - if you write in multiple voices), what makes point no.2 (”the beautiful”). Of course, that no.1 would be the problem (objectivity, true, pure reason, objective truth), because it will be all of this through you (the researcher), what turns out to point no.2 and no.1 again.

Renan