It's kinda like picking a perfume. No matter the popularity, or testimonies of a particular smell, in the end your taste and preference will determine which you like the most. The perceived combination of the base, middle, and high notes (
https://en.wikipedia.org/wiki/Note_(perfumery)); the emotion/impression that a particular perfume may evoke, the complexity/simplicity of its constituent ingredients, duration, presence, etc. Just like IEM, there is no perfect perfume. The character of a sound/smell favoured by each person varies. And that variation is simply too many, and too complex to be rightly determined by consensus as to which specifically is the best. You have to try and decide for yourself and no other. For example in my case, I like the Aether more than many other IEMs in this shootout, all of which I. Fortunately through reviews, we can get a glimpse or clue IMO. In a way, like reading a letter of recommendation