I've only really played the persona games. I have SMT 3 and 4, but I haven't played much of them despite really liking what I played. I also have a bunch of other spin off games but haven't played them. I still need to beat persona 5 despite being at the end of that game.

Persona 3 is my favorite of that series so far, with 5 and 2 both close behind. Nocturne or digital devil saga look like they could make a play for the top spot if I can ever get around to them.