There are different types of speakers. Horn, electrostatic, powered, regular and menthol to name a few. If I was to buy with no prior hearing I would at least know what flavour I prefered. Naturally the room will color a great deal.
Big Magicos, Focals (fast) or maybe Big Sonus Fabers might land well in my new upcoming treated room. I like those brands that I have been able to hear. Many folks like what they have or hanker for. I’m a big proponent of subs.
Fot a big purchase like killer speakers get thee but out (even far away) and check out some speakers. You could be a horn man or not!