Disgaea Vs. Disgaea 2!

So ever so recently I started playing Disgaea 3. I always wanted to try the other two.. but It just so happens the first one I try it out is the third one.. which I really really REALLY liked. Aha. It's addicting, very addicting. Anyways. I started this debate as i'm considering getting the first or the second Disgaea. To me they seem fairly the same but I was told the 2nd one is much more balanced then the first. My question for those who know what Disgaea is & have possibly played or heard about the 1st & 2nd one, which do you think would be the better choice to get? Thanks for those who help. Feel free to debate about the two here to your hearts content. The more differences I know about the two the easier it will make my choice as I definitely want to make a purchase as my PS2 is getting lonely..