Folklore= the only reason I can suggest this one is for the battle system because the game sucks in the story.
I haven't played Folklore -but- owning its OST...I can say that (well...if you're like me, at least and a game's music has some importance to you) that the game's soundtrack is phenomenal.
My personal favorite PS3/RPG's would be:
(currently playing)
The Guided Fate Paradox. It's a rogue-like that's VERY challenging while staying fun & fair,
-
Cross-Edge. Admittedly, very much a '
Love-it-or-Hate-it' kind of game...if you're on the "Love it" side (like me:); you'll find, IMO, one of the best, most in-depth, and addicting battle systems...Ever... + an unbelievable amount of combo & customization options,
-
Disgaea 3,
Disgaea 4, and
Disgaea D2: A Brighter Darkness. Well, from my screen-name, it should be no secret that I'll be 'biased' when it comes to the Disgaea series...but: #3 = Meh. Thought by most long-time fans to be about the series' lowest point; skippable.
#4 = IMO ===> D2 > 1 > 4 >2 >3; so - in the middle & definitely worth playing -but- prolly not the best place for a D-virgin to jump into the series.
#1 = Up until recently (when D2 was released; which, btw is the only direct sequel in the series/to #1) my favorite. TBQH, though - a lot of its mechanics are pretty dated now, so, I'd say that, if you're going to play it - play it 1st because otherwise (after playing the newer & more streamlined games); it could be hard to go back to.
#2 = Somewhat similar to 1 in a lot of ways with some nice QoL additions; worth playing, and
D2 = Easily, the best & most accesible place for a new-comer to the series to jump in. It's not only that -but- IMO, it's also far & away the best & most fun that I've ever had w/ a Disgaea game.
Maybe more later...