I dont really know what is the best since i havent watched much one piece but it definitely looked like it is better than the other two. i have been a bit off watching it though since i calculated that it would still take way over a week to watch all the current episodes even if you didnt eat, drink or sleep between episodes.
Is everybody crazy!!!!! I personally love bleach and naruto the artwork and the way no one is mortal and or the strongest intrigues me. Someone has to give the a valid reason not to like niether. The reason fillers exist is because they need seperation between the anime and manga they cant be on the same chapter bad for business. Besides the artwork the both are crazy and unbelievable even though bleach has gone to far now.