Have to say I'm a little disappointed by the picture quality on the blu-ray- doesn't really pop like I've seen other b/w films on Blu-ray...maybe thats the look David Lynch was trying to achieve- and perhaps he was- the gritty, smokey, hazy look of old London. Anyway here's the only review I have found so far.....still, great film....
DVD Outsider: The Elephant Man Blu-ray review