This series is absolutely incredible, the story is deep and involved and keeps you to addicted to it with brilliant skill on the part of the writers.
I was actually reccomended this by a friend and I gave it a look, though not being a huge fan of animes myself, and I was blown away by this.
There are so many twists and turns, you can never be sure of what is coming next. The characters are very likeable and even though there are two sides of opposition you'll want them both to win due to the fact that the characters are so developed and of such a high calibre in terms of creation.
On top of all of this, it is dubbed with incredible skill and enthusiasm in comparison to other dubbed animes I have seen.
Just buy it, love it and maybe even worship it if you are so inclined =)