This is the first Final Fantasy game I have bought, and I love it. The battle system works well, items are easy to equip, assuming you are using the D-Pad because using the stylus is really awkward.
A good variety of jobs available, each one with different strenghts and weaknesses, so you really need to mix and match different jobs to find your perfect combination. To be honest, the Wi-Fi feature doesn't work unless you have a friend with a copy of the game. Also, Wi-Fi is the only way to get certain items, battle a secret boss and get a secret job as well.
Most of the characters have a unique charm about them and you can really tell this by their facial expressions. Difficulty wise, this game can be hard at times, but not so much as you would stop playing altogether, it will keep you coming back to finish off that dungeon or beat that boss.
Presentation wise, the graphics are pretty good for a DS game, although there can be a few nasty textures around. The character models are blocky, but its only a DS game, so you shouldn't expect that much out of it.
Overall then, playing this game is a great experience and gives you a sense of satisfaction once you beat a boss or get through a dungeon. You are better off using the buttons rather than the touch screen and Wi-Fi is only worth it if one of your friends has the game as well. These things aside, a must buy. 5 out of 5.