If the dub is good then dub. Sometimes I don’t want to have to read during the entire episode and I just wanna do other things in the background.
So like, Death Note, Psycho-Pass, Dragon Ball Z, definitely dub – especially dragonball because I like the Faulconer music. But for an anime that I am watching for the first time and paying attention to intently I’d probably go sub. I watched Naruto subbed and then I watched it dubbed and the dub was weird for that one. I can tolerate it because the video games are also dubbed but the sub is better if I actually wanna pay attention.