Crimson Gem Saga - Classic type of RPG which is very solid but doesn't really try to do anything new.
Mimana Iyar Chronicles -

that shit. Don't even touch it or you'll likely end up with herpes or the like. Probably the one of the only games you can watch a youtube video of the gameplay and realise how incredibly terrible this game is.
Legend of Heroes Trilogy - Don't bother. They're very basic and trash compared to the original non-english PC version. Grab the next Legend of Heroes Trilogy when it releases from XSeed as it's lightyears better.
Class of Heroes - If you like dungeon crawlers that are similar to Etrian Odyssey, this is pretty similar.
Tales of the World - If you're a fan of the Tales battle system and like questing and grinding then you may like this. I was pretty so-so on enjoying it. It's a spinoff and you shouldn't expect it more.
Brave Story - Similar to Crimson Gem Saga in the fact that it's fairly solid and doesn't try anything new. The difficulty is pretty easy and I'd probably consider this more of a 'filler' RPG when you have nothing else to play.
Hexyz Force - Another filler RPG in my opinion. Not really a bad game and enjoyed playing it, but nothing that will take the spotlight.
Star Ocean: The First Departure - Since it technically never released in english before this PSP release, it's not a bad game. Worth picking up if you like Star Ocean 2 in my opinion.
Ys SEVEN - Releasing soon by XSeed. I played and beat the japanese version. If you enjoyed any previous Ys games, then pick this up. It won't disappoint if you're into the series. If you don't know much, then pick it up if you enjoy action rpgs.
Don't know if you played the first Valkyria Chronicles on the PS3, but the second one is also a strategy rpg. It's quite different than your standard srpgs and you should take a glance at it. Other than that, they're basically all remakes or just meeeeeh.