If you've never played a turn-based, tactical RPG, this is not for you. If you don't like limitless statistics, abilities, and customization of character classes and abilities, this is also not for you.
I'm not a fan of all the cutesy graphics, but that's a small price to pay for one of the deepest, richest, most complex turn-based strategy-RPGs ever written. You can easily get 100+ hours out of this, carefully building your small army of characters, tweaking and tuning their combat (and even non-combat) skills.
Try it at GameFly, then buy a copy. (Don't mind the ~30mins of tutorial and useless intro/plot -- it's wide open after that, and the combat is immensely satisfying.)
No matter what anyone says about Final Fantasy it will always be the #1 game franchise in history right up there with the Metal Gear Series. I played and beat the Advanced Tactics, this new instalment was worth the wait. It takes the edge off of always fighting in a linear RPG based battle system, its just this time you actually get to move you characters where you want. Unlike the Final Fantasies that came before (Excluding Tactics for PS1). Totally Worth it!