Persona 4 was my belated introduction to Atlus's Japanese high school RPG series, so it still has a special place in my heart.
The PlayStation 2 original was, however, also usurped by the greatly expanded and far superior Persona 4 Golden, which is where I racked up my New Game+ playthroughs. Even as I have become more time-poor over the years, I would still dip into its subsequent post-Vita ports.