I played P2 after P4 and much preferred the storyline to P4's, even though P4's was good and enjoyable. Eikichi ("that's Michel to you") is also my favourite Persona character. The dude carries an El Mariachi guitar case, complete with a gun inside and has some funny quotes and interactions throughout. P2 cast overall were a big step up from your normal JRPG stereotypes.
You do realise that Soejima did the in-game character artwork for P2, right? Kaneko just did the concepts (which aren't in the games), he was basically training Soejima on that game.
And the music is far superior to latter entries too. Especially the remixed PSP music, a lot of it being done by the SMTIV composer, Kozuka. Crazy Party is a cracking tune.
https://www.youtube.com/watch?v=ZrWWN1voPic P2 has probably my favourite JRPG soundtrack, outside of well, Meguro's other stuff like Digital Devil Saga 1 & 2 and Sakimoto's OSTs like FFT and Vagrant Story.
There's plenty of those slice of life moments it's just got a more cynical presentation than P4's optimistic feel and missing the S-Links so does the whole character development, having it more tied to the linear narrative than as a separate thing. I just found P2's narrative more tight and better paced than P4's loose narrative that sometimes really threw filler after filler at the player. I liked both game's casts pretty much equally. P3, I only played a little of so far and the only one I've not beat yet.
As far as P1 goes, the artwork is definitely some of Kaneko's weakest but the music (PSX version) is 90s dance and ambient, so if you're like me who loves that sort of stuff, cheese and all, will like it a lot. The story is pretty good but the weakest in the series. It has a certain atmosphere and mystique to it though. Also, the PSP version's music (by Meguro) of P1 really grew on me over time. I didn't mind the gameplay, being as how I'm used to SMT.