I highly suggest you do. Me, I'm done with it. I got about half way through the second time and realized I couldn't really go any further. It's not that it's a bad game, it's actually really really good, it's just that it's too deep for the casual playing I'm looking for right now and I'm kind of RPGd out.
The graphics are great, the dungeons are generally just as good as the first game, and the battle system is entertaining. The thing about the game is that depending on how you go about playing it it can end up being really really easy or really really hard. It's not even just difficult in that the battles can be a pain in the ass at times, it's just the way the game is set up. Leveling doesn't make you all that much more powerful, and the equipment intself doesn't make all that huge of a difference in the grand scheme of things. It's also not really the battles themselves, it's the complexity of the skill system.
You learn skills by equiping items, armor, and weapons in certain combinations and then defeating enough enemies to learn the skill it creates. It's not a bad system at all, and it's done a lot better than most RPGs that try to pull off something like this, but the downside is you have to think ahead quite a bit and it's a bit too deep to take full advantage of if you're just casually playing. You get to a point in the game where the dungeons you get into get hard because the enemies all have different elemental affinities, classes, and abilities. It doesn't sound that bad, but when you throw the awesome, but somewhat complicated battle combo system in, take the sealstone (placing special stones on diases or keeping them on you have different area/party/enemy effects when in dungeons...there's more to that as well) system into account, and equipment affinities it gets to be a bit overwhelming when you just want to play an hour or so a day and advance the story. You have to think ahead constantly and may have to backtrack to get new sealstones, grind for new skills, and go to different areas to harvest materials from monsters in order to make armour or weapons more suited to your current dungeon. Then when you get into a situation where there are a lot of different enemy classes and affinities all in one area, you may have to create a party where each fighter is strong against a certain enemy while the rest all such against it and so on.
Again, these aren't bad things, and they're actually a lot of what makes the game so cool, but it's not really suited for what I want to play right now. That and I totally spoiled the plot for myself.