Decent shounen. Nothing more, nothing less.
It's not Naruto Shippuuden level poor, but it's not really a fast paced action either. It's got fights, but they're very shounen-type.
However, the first episode was decent, episode 11 was also very impressive, and the pace is picking up, which can only make it better.
It's strengths are it's great sense of style and it's likeable characters.
My only advice can be - don't expect too much and you may be pleasantly surprised.