My favorites are ffxiv, because the music is very closely woven into the story with motifs and stuff, so it brings me back to it. Its also just pretty as fuck, they do a lot of weaving other songs and musical themes into other songs, so a lot of the time you'll be in a boss fight and recognize a theme from earlier, mixed in with the boss music. Some context is spoilers, so I won't go into it, but the Endwalker final boss has the music shifting from each previous expansions themes, morphing and shifting to fit the overarching boss theme, and its fucking glorious.
Also, the ace combat games have the most insane music, its basically a meme that "everyone's a badass until the sky starts singing latin at you" Its this really cool mix of operatic vocals and rock/synth music and its so fucking good.