Gonna try and keep this short and simple since im not a master reviewer.

I think the manga adaption of FLCL is pretty good. Its not better than the anime ,but its still worth a read. The story, and characters take a backseat in exchange we get more creative and awesome art that you probably wouldn't expect FLCL to have. The art is probably the best part of the manga. I've never quite seen a manga as well illustrated and unique looking as this.

Overall, its a pretty faithful to the anime. The story doesn't seem as important but what they do with the art, and style makes up for it. It doesn't absolutely need to be read, but if you have some spare time, and find yourself interested, its a good read!