Both Maybe?!? I'm a big lover of the Final Fantasy series and I will get anything with the name on it if only for collectors sake but when my brother asked me which console I was going to get it for I had no idea. Do I want the crazy addiction I have for achievements to possibly change the experience of the game for me or just admire it and enjoy the story line with out being distracted or constantly waiting for the 'blep' of an achievement? I know if I really enjoy the game I'll have absolutely no problem going back to playing through it a second time and gathering as many collectibles and spending ridiculous amounts of time levelling up.
Would it be stupid to want it on both systems?