"Should I buy this game?" That's the most important question to answer in a review, I think, and I'll answer that first: Probably. If you're even looking at the reviews for this game, chances are that you like the overall concept of it. Given that, yes, you absolutely should buy it. The gameplay is well-balanced and intuitive, the options are truly varied, and the old-school JRPG feeling really shines on here. A lot of love and a lot of learning have gone into this, and it shows.
Now, to be a bit more specific:
Visuals - Fantastic. Great art, very clear and quite pretty. Solid readability when encountering new things.
Music - Varies. Sometimes it's great, sometimes it's jarring, and many of the choices made here were just plain bizarre.
Balance - Wonderful. You have the freedom to choose how you want to play, and cleverness will be rewarded.
Replay - High. The various combinations for the main team, as well as some in-story decisions, invite exploration.
Writing - Good. It's really quite strong in a few spots, but my socks were not knocked off.
Clarity - Good. If you read the strategy guide at all, bump that up to Near Perfect.
Overall: Very highly recommended. I've really enjoyed my time spent in this game, and plan to spend much more. If you happen to find this game on sale or in a bundle, then pick it up even if it seems like it's not your thing. The game is just that good.