Yes, this is me continuing the silly nitpicking over pronunciation! Actually, it's the point I forgot the other day, only remembering the side point about Magneto.
Their name is taken from Dr. Durand Durand in the movie Barbarella. It's been a while since I've seen it, but I seem to recall his name being said a fair amount throughout and being pronounced "DUR-ann DUR-ann". As it happens, I don't know anyone, myself included, who says the name of the band anything other than "dur-ANN dur-ANN".
It hardly matters, as the names are spelled differently and in much different contexts, so I'm hip if it all got officially twisted around, but I was curious.