Some very good advice here, so far. From my limited experience, the ordered qualifiers are:
Budget
Brand/quality/reputation
Housing style (tube vs traditional)
Resolution (384 minimum)
Base magnification (fit it closely to your needs)
Battery style
After that, you’ll have options narrowed it down a good bit and then can dig into other items like audio, button layout, pixel pitch, NETD, weight, included mounts, etc.
