I just beat Final Fantasy XIII and I am 76% through Magna Carta 2. I own all three of the above games, and have no clue which to play next. I'll be playing all three at some point, it's just a question of which order. I've heard good things about all of them, which hasn't made the decision easier.

So, vgchartz community, I will let you decide. Vote, and I will heed your decision.

Of those three the only one I've played is Lost Odyssey, but it's also the one I've heard the most praise for so I'd go with that.  Unless you want to save the best for last... your call.

I am almost finished with Lost Odyssey, and its been great so far. Star Ocean is ok, pretty cheesy though. Have not played blue dragon.

Havent played any of them but heard blue dragon is a great game.

Save best for last, and that would be Lost Odyssey, its one of the longest, if not the longest game this generation.   Hope they make a sequal!

Play Lost Odyssey....its quite an excellent game 

Lost Odyssey

Lost Odyssey is pure quality, a solid gameplay foundation (the battle system, the ring system, the excellent experience-regulating system) wreathed in some of the best writing in the industry in the form of the Dreams of a Thousand Years. It's legitimately great, full of excellent music and memorable characters, and it's actually a worthy successor to Final Fantasy.

You'll want to install each disc as you play through, though, to cut down on load times for battles.

Once you finish those, if you haven't already, I highly recommend picking up Tales of Vesperia. Of those, I've played Star Ocean and Lost Odyssey, and while Star Ocean probably has a better battle system, Lost Odyssey beats it in every other department imo.

I do have Tales. It's a game I am playing alongside all my other games, as I have more fun when some friends are around to pick up the other controllers. :)

Thanks for everyone's input so far! Please keep it coming!