Just got my 60PM6700 from Amazon a couple days ago, upgrading from a Sony 60A3000. Love the picture! Movies like Sin City are practically reborn with all the inky blacks. Ive been throwing on movies I havent seen in a long time just to check them out on the new screen. Watched PotC:Dead Mans Chest last night and I was blown away by Davy Jones' crew. Also loved how the jail scene looked. I wanted to touch the bars, they looked so real. Dark scenes are just beautiful on this set, Im so use to my 60A3000 producing grey scenes

I went with the LG PM6700 over the Panny ST50 since the LG was $500 cheaper, plus came with two free 3D glasses (another $100 value), plus the 4 year protection plan was $80 cheaper since I was knocked into the lower price bracket. So, almost $700 difference between the LG and the Panny, I didnt think I would notice a $700 picture quality difference.
Do you guys use a different picture setting for 3D movies? Like increase brightness or something? Just trying to get a better 3D picture since the glasses darken the view.
The screen is definitely like a mirror. Not sure how much anti-reflective coating there is on here, but it doesnt seem like much. Any light source from behind will be picked up. Doesnt bother me too much since 90% my viewing is at nighttime anyways, but NFL Sundays might be a problem :P
Overall, very happy with the purchase. TV is worth the price of admission!