This show is a gem. Right off the bat, it hits the viewer with an interesting premise and runs with it, showing off a great case of characters and cool Sunrise style animation.
It seems specially geared for western tastes, with its caped crusader superheroes and golden age comic book style plots.
Though the larger arcs are somewhat lacking, this flaw is minor compared the excitement of the individual episodes. Definitely one of the best shows of the Spring and Summer 2011 season.