No the fillers suck!
Bleach is ok, but then it depends on whether you like the fillers...
I won't say anything about OP

- ofcourse da best 1!
Seriously, choosing was hard because I like the 3 of them: they're all awsome stories with extraordinary characters...
It's just that sometimes Bleach episodes suck, or it's Naruto ep, or even (it happened only once, reason being fillers) One Piece episodes
My opinion/mood changes with every episode (~.~)'