I've only played the three SNES games out of the main series (and some Kyuuyaku but I dropped that because it didn't click with me) and my favorite was, surprisingly, if...

I wanna get back to playing the rest of the games but I got burnt out at the time since I played all Personas in succesion while also playing those three SMT games, and then got wrapped up in some other stuff. Nocturne is next on my list though and I can't wait to try that one out.