It is dub for me. Mainly because I don't really like how screechy high pitched it can get sometimes in japanese, and I also feel like I connect better with the story if I can understand what the voices are saying
I prefer dubbed anime for the most part because I know if I look away from the screen I won't miss anything but with subtitles if I want to step away to grab some water I have to pause and I really have to pay attention to the text. I'm also a slow reader so I don't like having to pause a lot. I will watch anime that doesn't have a dub available if I absolutely need to.