I can stand most english dubs, they're just fine. It usually matters if I've watched the subs. When Naruto and Bleach dubs were out I hadn't watched the subs or even cared about them before that so I didn't care. That was the time when I didn't watch anime at all unless it was on tv. Death Note is the only one that I've watched the whole series in subs before the dub, and its still awesome. Now I just hope D. Gray-man turns out good.
And why is everyone saying One Piece is bad? They aren't subbed by 4Kids anymore dumbasses, and they haven't for awhile. One Piece is great now honestly even if the stains of 4Kids are still being washed off.