subtitled, always.

Original voices are always best and with subtitles one can always just read what is being said. I prefer to watch even english stuff subtitled because sometimes its really hard to even hear what people are saying and sometimes there are stuff you cant even know without the subtitles, like if someone speaks some other language or sign language.

Though dragonball z is odd exception, that is where i like dubbed voices better. Maybe its because its how i watched it first when i was kid.