Firstly One Piece might look like your typical kind of Shonen but no! One Piece is very unique in many ways like a character's laughter, different kind of race/type of people in the OP Universe, how characters from an episode are link to future episodes or having a background which connects to the past. Oda-sensei(The Mangaka) doesn't "throw away" characters he made even though its a minor role. These minor role characters will be appearing or being thought of again in the series. Oda-sensei is just that good in character development! Almost every episode of One Piece is important and if you miss 1 or 2 episodes, you are actually missing quite a lot. One Piece is an Anime which you must never underestimate it because if you were to sit down and really think about it, One Piece is actually a very very deep series.
Story Rating: 9/10
Character's art and animation ... Well, the earlier episodes of One Piece definitely looks old and of course not HD(But I think there's a remake of the earlier episodes? Which was made in HD). But that doesn't matter. As you watch on, the art gets better and better. Not really something to be bothered with. As for the animation, sometimes it is quite bad but usually happens in those unimportant scenes.
Art/Animation Rating: 8/10
For the Sound, its good which I'll rate it 9/10.
So in overall, such a long Anime definitely might get boring at certain parts due to history talking or draggy scenes but fret not, those are still important because almost everything in One Piece are linked.
Overall Rating: 8.7/10
