PS3 or X360?

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So which should I get? I should point out that most of the platform exclusive titles aren't particularly interesting to me. I've been a faithful follower of the FF series since the SNES era and bought a PSX just to play FFVII. Similarly I caved in and bought a PS2 when FFX came out. My first inclination is to get a PS3, but since I've heard FFXIII is on both platforms I have a choice. Most of the other games I want to get are on both platforms as well.

I'm mostly into RPG, tactical RPGs and some action games. In addition to FF I've been following the Suikoden series, some of the Dragon Warrior games, and LoK.