Reallllly late review of the 50c7000 that we've had in the store for quite some time:
Pretty deep, immersive. Cannot get a full review because we have bright lights on, with one on almost directly above the set. However, when we first open the store and it is relatively dim (like a normal home with natural light), the blacks seem to disappear with the bezel surrounding it. Very good also considering it is almost always set to dynamic (torch mode) during the day. the set also sits next to the panny g20, and ive switched the demo movies back and forth between the two and have been pleasantly surprised with the c7000. I still give the edge only slightly to the g20.
2d to 3d conversion was poor (personally), especially after seeing the native 3d panasonic displays. However, some sort of depth is definitely visible while watching cgi or cartoon footage. Personally wouldn't use this feature much. Full 3d setup however, is simply breathtaking. No ghosting, or crosstalk between the images. This was very similar to the Panasonic setup that featured great blacks and superb motion. Poor execution with the rechargeable glasses however (we've broken four sets already). Opt for the battery operated ones, much more comfortable.
First: buzzing. None heard, none noticed. Again, when we open the store, quiet and no issues.
Second: burn-in. we have the movie transformers set up to play everyday. If I get to the store late (10am) and the set is already on at the main menu (presumably for 30-1hour), I do see partial burn-in of the menu items. Granted, this happens almost everyday. Somebody's dumb-*ss in the warehouse gets the set on but doesn't run the movie. Uggghhh. Light burn-in that I have removed by using the pixel-scrolling function (or just playing the movie). Nothing permanent, but still annoying.
Third: 2d-3d conversion: Oddly, i get that same image burned in I just spoke about when I turn on the 2d-3d conversion. Doesn't matter what scene of the movie i'm in, I get faint images of main menu. I also notice the black levels rise dramatically when i switch it on, regardless of what mode i'm in (dynamic, standard, etc.). Again, I was unimpressed with the conversion and would most likely use it only with cgi/cartoons.
Fourth: Heat. The set runs alot cooler than the b850 we had in the exact same spot! Verry happy about this one! It does get quite warm to the touch, but not scorching hot or unbearable like last year's models. I'm gonna have no problems replacing my 42x on the wall with this one.
Conclusion: I've been waiting for this tv... ever since the b850/860's went away. I currently have three panny plasma's (older sets, px60, pz85, etc), and would love to switch to Samsung over just because of how thin the c7000 is. My main concern was the rising black levels of the panny's, as well as the overall design. I'm sick of all the LED's that my friend's have been buying and its time to show them you can get a superb (superior!!) picture with a plasma that's just as thin. Gonna pair this with a klipsch/yamaha package for my birthday coming up on my discount so its gonna be kooooo!
Hope this review helps, I'm not really a noob, I just read and lurk. Also not an expert as alot of you are but I do get quite a bit of hands on time with alot of the products.