I was too young to not be amazed when I first watched One Piece so the first episodes were pretty exciting judging from my memory. Didn't really know what animes were and that there were more than just One Piece, Naruto, Fairy Tail, etc.. I was captivated by the Enies Lobby Arc and since they decided to start airing from the beginning again in the middle of it I discovered that you could watch every episode online. That was a bliss!
800 episodes may be hard to catch up but if you enjoy it the more the better!
And thank you for your feedback!