I have both the PS3 and 360 consoles. When I went out to buy XIII-2 I happened to see the 360 collector's edition so that's the version I decided to purchase. Around the same time I bought the original XIII on 360 as well because I know that save data carries over from one to the next and I wanted that.

I borrowed and beat XIII a long time ago but didn't end up buying it until around the release of XIII-2.