Personally I tend to watch dubs more, but if the dub is REALLY bad then I just switch to subs.
I watched Attack On Titan in English which was pretty good for the most part except for Armin's fucking voice O_O
Most Helpful Girl
Sub, I honestly hate the sound of their voices in English ew.0
Most Helpful Guy
Depends, sometimes I prefer dub, but I usually prefer subtitles because some voice actors have a really irritating voice.0