If I had to choose, the original Xenoblade Chronicles.
IMO, when it comes to music, story, and characters, the original beats X, and all those three things are important things to me in a video game.
I like the gameplay in X more than the original in some aspects, like how there are different BLADE groups you can join and customization options to your class, which is nice, but I also liked the Monado in the original, how you could use all these cool arts to affect your stats and whatnot when fighting enemies.
And back to ther character thing, I liked the playstyle and just well, character of every single character in Xenoblade, especially Shulk, Dunban, Melia, and Seven. With X, the only character I really enjoy is Elma, the other characters were alright, except Lin, with her annoying "let's eat Tatsu jokes" every 5 seconds, and while I like Tatsu, he's no Heropon Riki.
Overall, both games are amazing, but if I had to choose, the original.
"Just for comparison Uncharted 4 was 20x bigger than Splatoon 2. This shows the huge difference between Sony's first-party games and Nintendo's first-party games."
