The first game was great and there was a QL of it. The second game has added a bunch of classes that would be interesting to see. I don't have a PSP, so a QL would be very helpful in deciding if this game is a reason to get one. 
 
Does anyone else feel they'd benefit form a QL?

I've heard the game is better in the gameplay department this time around, but the characters are more stereotypical this time around. If you're a fan of the series, then you should definitely get a PSP. However, I'd recommend looking at other games before deciding on a PSP for a single game.

I'd be interested in seeing a quicklook at it since I don't know what it looks like on a psp and it technically would help it to do a quicklook since it would be noticed a bit more but it doesn't need it and GB doesn't have to QL it either.

I've already played through 90 hours of it.  The story is kinda highschool cheesy, but the gameplay is still good.

Gameplay is much the same as the original, but definitely improved in one or two areas.
The story on the otherhand is much, much worse.  It essentially takes place in a highschool with the typical anime dribble you'd expect in place of any character personalities or development.
 
Very disappointing after the first game had quite an original story and a bunch of likable characters.. but if you're in it for the gameplay, feel free to skip the cut-scenes.  I'd look up one or two other games for the PSP before taking the plunge though.