Obviously I own every game you listed.
Star Ocean has a fun battle system but a cringe worthy story and a really dumb plot twist towards the end. It also took me over an hour to beat the final boss who had like 3 million HP.
The Last Remnant is solid serviceable story and a fun battle system with challenging fights. The battles are like you commanding an army on a large scale
Infinite Undiscovery I enjoyed but i'd call it a C level game. it doesn't do anything particularly well or bad. last i knew this game canbe had dirt cheap. if you like JRPGs its worth a spin. Plus it has the dinner dance scene.
Those kids are fukking creepy.
Tales of Vesperia is probably the best JRPG on the Xbox 360 and one of the best to come out in the last 2 generations. it is however a long game and its a Tales game meaning if you don't like the characters you probably won't like the game. other than Karol who's just tolerable the rest of the cast is great IMO.
Resonance of Fate is weird. I never fully understood the battle system because its complicated and poorly explained. The plot is really weird but the battles seemed good from what i understood them.
I just bought Nier not too long ago. its an action RPG and i heard it has a hermaphrodite in it but the story is supposed to be really good and you have to beat it at least twice to fully understand it.
for everything you put it together and have all of those games. I def gonna cop Tales of Vesperia today when I get home and I do really want to buy The Last Remnant but it costs f*cking $69.99 on Amazon
and it even not on Xbox On Demand 
Have you played Blue Dragon?
and


Where are you in the game?