I guess I'd say neither as well. Or more accurately it's both depending on where you go, so it all cancels out.
One Piece is the best selling series in Japan, so obviously it has an enormous fanbase. Said fanbase is really dedicated and quite a few people would argue that OP is the best anime/manga. I for one wouldn't quite agree with that, but I can understand why people would think that because it is a quality series and definitely one of the better Shounen out there.
Then there's the faction of OP haters out there. Sad thing is that, of all the hater factions I've seen, the One Piece one is probably the worst. 90% of the time, people who hate One Piece are incredibly misguided because they either make assumptions that it's bad without seeing it based on the art or get the notion that because the 4Kids dub was bad, the entire thing must be bad. I know some people myself who love Fairy Tail but hate One Piece, in spite of the fact that they're incredibly similar (and One Piece is the superior in my eyes) so it's obvious that the only reason they dislike it is because they haven't given it a proper chance and are too hard-headed to admit otherwise.
So in the end I can't say it's enough of either to say for sure.