I always watch dub, aside from cases where the direction is bad or shitty acting. I can easily tell when the dialogue is stilted as fuck or the actors are playing people they aren't suited for (Love Hina was really bad, even with good actors. I couldn't watch it after the sub was so good). You could say Madoka and Sayaka's English actors are SQUEE levels annoying, but they don't act like shit. At least Sayaka doesn't. I've heard far worse dubs in my life (Get Backers, Shuffle, most late 90s/early 2000 games, Arc Rise Fantasia). This doesn't even come close to that crap.
I would like to ignore this becoming a dub/sub thing. I get enough of that stupid debate shit on other boards and Youtube.
"Misguided mortals, you'll burn with me! Spirit of man cannot be freed!" - Black Sabbath, When Death Calls