Well, if you're a fan of long, complex conversation trees, very strategic battles, lots of NPCs with different personalities then it won't appeal to you as much as it did to me. But if you're looking for an old-school feeling, a logical character system, a brand new(yet not so original) world that waiting to be explored and great production values, you can't go wrong with E:B I.The game is really greater than sum of its parts and deserves that $30.
Aquaria will be available this friday BTW.