I'm on my third TV now with the PN59D7000 after returning a LG 60PV250 and a Samsung LED UN60D7000. The lg was just bad with no brightness at all and a gray "haze" over everything. The LED D7000 had looked great with some content but was completely washed out with other content. Only turning on dynamic contrast would fix the "bad" content but conversely would make colors bleed with the "good" content. And yes, I played with it for many many hours with different calibration settings. So now here I am with the Plasma D7000...
It's definitely better than the other two in terms of picture quality. I've calibrated it with AVSHD and by using some of the posted settings I've found, and the picture quality is definitely much more uniform over various inputs and different channels. I just wish the TV was like 10% brighter

. The cell light setting from 16 through 20 doesn't do anything at all. I have an older Sony 52" LCD and it has such a bright good looking picture. Wish I could buy that model with 8 more inches of screen real estate :P. Anyways, I'm giving it a whirl to see if it grows on me since the picture is really that good.
edit: Oh and it buzzes like people have reported

. It's not so bad that I hear it all the time, but I definitely hear it when things get quiet.