In terms of what? Playing in the context of the game, or playing outside the context of the game? It's been a looooong time since I've really listened to a full game OST outside the context of the game. Maybe FFIX. As for in context of the game, surely much more recent. Certainly Persona 5, as a baseline I'm sure I loved the music and it's fairly recent. And actually, come to think of it, while I haven't listened to the full Persona 5 OST, I've definitely listened to a number of my favorite tracks outside the context of the game. Considering most of FF7R music is based off the original, I'd say that one was pretty good and also counts. So, yeah, probably FF7R, if just listening in the context of the game counts. Persona 5 if you just have to listen to some tracks outside the game. FFIX if like you have to purchase or otherwise sit down and listen to the whole OST through.