This is a amazing game and I am hooked. If I didn't have to go to work I wouldnt leave the playstation. I do recomend that people buy the user guide to go with the game to help collect all the fragments as there hidden all over the place. The Moogle is a clever addition to the game as well, I love it when it transforms.
Though I do recomend playing Final Fantasy XIII before this, if you've never played a Final Fantasy title before then this is the one for you. Its not overlly hard which can be overwhelming to new gamers leaving there morale feeling low. XIII-2 uses a basic levelling up crystalasium, i recommend keeping a good balance on these.
The collectors edition is the one I got and I have to say i'm very impressed by my extras. I also go the pre-order pack too and the steel case fits nicely onto my DVD rack (which my PS3 games dont LOL)
So, sumarasing title BUY THIS GAME!