Try Grandia on the psx, even though it's old, it's still fun to play.
Try the Tales series (tales of symphonia, tales of vesperia, tales of graces f,...), it's action based rpg really fun to play in my opinion (i'm a fan of these games), plus you can play with friends!
There is Star Ocean, it's like the Tales of games, but a bit different in the battle system and really enjoyable, and you can still play with friends!
You can try Breath of Fire, i like them, they're pretty nice games.
I know other games like Suikoden, Wild Arms but i never had the chance to play them.
Oh and if you haven't you should try Golden Sun on the Gba, it's pretty awesome!