Which FF iPhone game to get? Opinions needed!

So I have the choice between I, II, III and Tactics, but I've never even played the originals (though I'm not sure I like the idea of FF Tactics anyway - not bashing the game, just never appealed to me). Any suggestions on which has the best story, battle system and gameplay?

It's about time I got some old style FF action back in my life!

If Final Fantasy Tactics doesn't sound like your kind of game, then I would probably suggest II or III as they're a little bit more in depth than the original and have better storylines and characters.

1 - FFT
2 - FF3
3 - FF1
4 - FF2

IMO FFT is the greatest game ever made, but if you don't like it you don't like it.