To the OP:

Yours is a good question, but not one that is simply answered.

To draw a comparison, have you ever tried to research the purchase of a new car? If you have, most likely you will have had at least some frustration with the myriad of "facts" compared, and opinions offered.

One thing that may help, however, is to get used to how Tri-X behaves in a developer that you choose, and learn how to describe that behaviour in terms (shadow speed, resolution, accutance, grain, contrast, highlight retention, spectral response, etc.) that are commonly understood by those who like to talk about film .