I Just finished Persona 5 this week, and it's overall easily the best Persona game IMO (I've played all 5, and finished, 3, 4, and 5). It takes all the great stuff in the past games and makes them better, no contest, although there are a few things I have beef with.
--For one, the DLC difficulty should've been available for New Game + automatically. It's clearly made for that purpose, and I would've liked to have it readily available.
--The endgame was a bit...blah for me, mostly because of how it progressed. Without spoiling anything, I was a little skeptical with the motivation for going to the bottom of Mementos, but I thought things went pretty well up until the developers seemed to try to recreate the almost perfect (IMO) endgame sequence from P3, but it fell pretty flat. In fact, it actually felt pretty lame by the time everything wrapped up and I was onto the ending. Not that there weren't good bits, but overall it was subpar to me.
--Finally, from what I understand of how NG+ works, the replay value is pretty poor, much like P4, in this game. Sure, there's a (poorly kept) secret boss, and I liked how they handled the carry over stuff, but I wish there was a bit more incentive to play again and max out all your social links other than a trophy.
Still, even with all these gripes, the way they handled social links, social stats, and most everything else was amazingly good and clearly much more balanced than past Persona games. I probably liked every character in this game and 90% of the plot better than the previous games, although P3 still has the best plot climax (and atmosphere too if I'm being brutally honest).