Brotherhood is a great show. It starts off pretty slow, but by episode 13 it really picks up. The first part is paced way too fast, but thats only so they could get past the parts that all the old fans from the 2003 FMA had already seen. After episode 13 it really becomes its own show. I would say that the chibi ruins some of the serious moments in the show, but in the later episodes its not a problem at all. Other than that the comedy is fine is about the same in both brotherhood and the 2003 FMA. However, Brotherhood excels at fight scenes and they really come up with creative ways to make use of alchemy and the situation. As far as endings go, the 2003 FMA has the more thought provoking ending by far; this is kinda ruined by the FMA movie though.Overall, as a person who has seen both series, I wold go with Brotherhood.