Minstrel's Song. The game is a full remake, like FFIV DS, rather just an enhanced port with a new paintjob, and they expanded nearly every aspect of the original title in it, including more characters, more in-depth combat, more quests, storyline bosses that were missing from the original, more equipment, equipment upgrading (as I recall, anyway), and they fixed all of the crazy bugs plaguing to original title. You also get the lolz of voice acting. The original is still pretty nifty and completely playable if you want to check it out instead of buying a new game, but MS is the definitive version of the title.