Which version of Disagaea should I get?

[SorenEmblem]

So, I'm thinking about getting into the Disagaea series, but I dunno which version of the first game to get.

There's the original PS2 version. I have enough PS2 games already, so I'm not very concerned about this one.

There's the PSP version, which I've heard is the best version, because it has an additional campaign.

And then, there's the DS version. I kinda want this version the most, because I'm seriously lacking in DS games (then again, I'm lacking PSP games, too), but I've heard the PSP version is best, due to the extra campaign among other things.

So I want everyone else's opinion as to which version I should get.

[Wicked315]

Personally I cant really say.
The DS version is OK. One of the few games with verbal dialog. So I voted for DS.