I grew up with 200X, and only later became exposed to the Filmation shows and the minicomics, much less the New Adventures, which I still have next to no experience with. My experience of He-Man is non-linear, with different elements coming in at different times, and certain ideas and concepts constantly evolving. No one version of MOTU achieves my ideal of what I want the franchise to be, and unless I ever get around to writing a fanfiction epic (unlikely), I doubt any ever will.
Still, ultimately I came here for Barbarian Sword-and-Sorcery Action. The pulse-pounding theme music from the MYP show, the menacing Skeletor, the giant power sword, the sense of menace when Adam initially comes to Castle Grayskull, all predisposed me to fall in love with the early Minicomics, especially the Mark Texeira and Gary Cohn ones. I voted for "MinEternia" because it's got very pure ideas that I think got lost later, ideas that never show up elsewhere in the franchise, like a reason for He-Man to be a barbarian beyond looking cool, or the individual motivations for characters like Tri-Klops, Ram Man, and Trap Jaw, beyond just being one of the good guys or one of the bad guys.
All of which said, there's definitely elements that came in later which I am glad exist in the franchise. I really sincerely like Prince Adam, unlike a lot of early Minicomic fans; He-Man lite episodes of the Filmation series are often some of my favorites. Orko is a lot of fun. Man-At-Arms' mustache is worth keeping. The 200X warrior Randor and especially Filmation's Lieutenant Marlena Glenn of Earth are both triumphs. Even self-evidently stupid characters like Snout Spout have a certain charm to them that I'd be sorry to lose. Elements of Eternia's aesthetic in Filmation and in MYP are head-and-shoulders above the same elements everywhere, like MYP's Howardesque mountains or Filmation's stark twisted landscapes. Oh and while this has little to do with Eternia, the writing and characterization in Dreamworks' She-Ra and the Princesses of Power is easily the best overall media to come out of the MOTU franchise.
Even considering that, I think I'd have voted for the Early Minicomics. There's just something simple about them, something that fuels imagination instead of trying to dictate what can be imagined, as I tend to think of later, more solidified versions doing. I think that's valuable.