The PSX Version and the PSP version.

I've looked at several websites and reviews and such, but I haven't found any real definitive description of the differences between the two games, if any exist at all.

Are there new jobs? New characters or sub-plots? New equipment?

I don't own a PSP yet. I'll be buying one solely for the purpose of purchasing this game. It's unfortunate because I really don't want a PSP a whole lot, but I need to buy any game that has "Final Fantasy Tactics" in the title, simply because of what the original FFT has offered.

I guess I'm almost asking if it's worth buying a PSP just for the game, but I really don't care if it's "worth" it. I'll be doing it anyway, whether it's worth it or not.