I've watched only the first part of the series because Fortune loves it and we bought the first DVD box set from Hong Kong.
I think this series is very good you should get it if you like the genre, which is something in the middle between adventure and comedy, but it has also some serious parts. The characters are all brilliant, especially the main characters, and it's definitely something different from the typical series we are used to.
The second DVD box set isn't out yet and the manga is still being published also in Japan.
If you need some addictional info, contact Fortune: she has a shrine on one of the characters of One Piece and she can tell you something more also about other aspects.
My overall suggestion is to get this series, but it's up to you
