Star Ocean I would go with the PS3 version extra content and only one disc. Eternal Sonata is a toss up PS3 version has extra content but no trophies versus achievemts. Blue Dragon is meh I would skip it but it can be beasten pretty quickly but you can waist a lot of time on it if you go for most or all the achievements. The rest of the games you listed I have no clue about. Also if you haven't played Infinite Undiscovery I would get that instead of Blue Dragon the only thing I liked slightly more about Blue Dragon is the music everything else is better in Undiscovery and the only major gripe I have about the game is that you can only control one character. But it does everything else pretty good and on top of that it has no load times which is rare for a disc based JRPG I actually can't think of another disc based one that has no load times.
