Well for me, it's basically what I see it first in...so like if I see something in Dub, then watch it with subs it might be a little weird. Same with watching subs then you watch one episode of dub and even though you don't have to read the subtitles, something seems a little off-key.
So basically if I start something in Dub I will probably watch it through with dubs and same with subs.
Although of course, I prefer subs
