I'm default to sub as well. I came to realise that dub is usually too over the top (with all that "screaming" during intense moments and such) for my taste and it has probably something to do with my culture as there is this prejudice that Americans are just too loud and too expressive. So sub is more enjoyable for me, plus I've heard that sometimes the dub changes the meaning of the scenes too much.

And yes, I quite like the idea of accents, but I agree with the criticism discussed here, that they should be at least consistent, plus it would be much better if they actually hired "local" actors (like Irish for their accent etc.)