I'm the in the complete opposite camp of LE - I think Phantom Brave is the worst of the trilogy. The guide is quite extensive and fun as hell to look though.
I own Disgaea (for the third fookin' time, but my idiotic puchasing habits are topic for another discussion) and while I haven't put that much time into it, I can see it's a lot like La Pucelle.
I <3 La Pucelle. Absolutely loved the characters, the story, the pacing, the location. ESPECIALLY THE GRID.
Which Phantom Brave tosses aside in favor of a sphere-system that IMO, causes headaches and annoying little problems. I always had to re-move my people because I didn't put them in the right position for an attack or something like that...I just want a grid, for chrissakes.
And don't get me started on the confinement system. To this day I don't understand a few things about that game. Just read over the guide and play the game a lot, I guess. The story seemed somewhat interesting...but I could never dig it. Marona was too goddamned nice. It's a shame