What about if I want to actually have a good time and play a good FE? Which one would you guys recommend? I see the GameCube and Wii ones are the most recommended, maybe?
What about the SNES ones?
7, released as just "Fire Emblem" in the west, is the best one for beginners. Has an extensive tutorial (if you're playing without patches, whether you like it or not), high polish, good story, fun character, replay value and is reasonably balanced. 3 (Mystery of the Emblem, if you know Nipponese), 9 (Path of Radiance), and 11 (Shadow Dragon) are all acceptable for new players, but 7 is the best.
From staff interviews it seemed like IS were more interested in remaking 6. The director of SoV implied that, at least.
https://www.theverge.com/2017/5/18/15658120/fire-emblem-echoes-nintendo-3ds-remake-interview
if Nakanishi had to pick, he knows what game he’d choose. “Unfortunately his story has never been told,” he says of Roy, “so it would be great if we could release a remake of his story.”
6's flaws are massive and could use some fixes. You got shit like half of the units (even early joiners) being useless for one reason or another, and that's not an exaggeration (of the 27 units that join before 8X, 11 of them are pretty bad and Roy could be added to make that a full 12). Sacae. Ambush spawns. Weapon accuracy being crap all around. All weapons giving the same weapon rank growth. Only four characters get to talk in story for more than a chapter (Roy, Marcus, Mernilus, Guinivere). Spamming status staffs and siege tomes. Half the support convos being pointless and all the support convos being unobtainable if you played remotely reasonably. Thieves can't promote and Roy can't promote till nearly the end of the game.
Thing is, the game
is fixable without rendering it unrecognizable. Most of the map design itself is decent enough to start with (more than can be said of Gaiden), the base mechanics are solid enough.