This is a mandatory anime for any person after the 13 years, no less. But I recommend watching version 99 and then watching this one, the main 2011 problem is that this production starts this anime thinking of a more childish adaptation (for a younger audience) and then changes that, that creates a strange contrast that can create two bad decisions in the new audience: they leave the series but only follow by the advice of a great series, not their own decision or two, they do not digest this version expecting entertainment without so much suspense and violence.
I was disappointed myself after meeting top to toe and cheering version 99, and looking up to episode 22, of course later watching the last episodes and it was a beautiful surprise, still not the charm of version 99, but when they put the production and direction in certain episodes and moments, this became a masterpiece, this is a carousel, I love it is a great anime but it could be even better, especially for that almost wrong start, one of the best animes of the decade and one of the best narratives i ever witness.