Hi, I had previously posted a short review on this model however it seems to have been lost due to a problem with my Facebook account. I'm no expert on displays but here's my take on it:
I am currently running it through DVI>HDMI on an NVIDIA GEFORCE 480GT at 1080p native 60Hz. The input label is set to PC and all advanced processing in the TV is turned off for regular use. I do run it on "Game" label to watch movies to get the tru motion and the advanced video processing if desired. The tests below were all performed on both Game and PC mode. The other modes are very similar to "Game".
Panel Type: I have the IPS display.
Colours: excellent, very vibrant when "Color" setting is maxed out, I find that the default settings for PC are a bit dull especially for video games, I turned my "Color" setting up to about 70 which makes very much in line with my more expensive 22" monitor. Haven't really tested the fidelity of the colours although pictures look the same on the TV as on my monitor (except for the big increase in size).
Note: there is a very slight vignette effect (2mm on each edge) although very hard to notice unless you look at the TV from a weird angle and have a solid, bright colour being displayed along the edge. No cloudiness in the screen, very uniform.
black levels: I find that it's really great in a dark room. I set my input to "BLURAY", Backlight to 2, and Brightness to 60. This makes it look really good although once you turn the lights on, you'll find that the backlight isn't bright enough to compete with a 60 watt lightbulb. This is why I love LG's saveable settings. When you modify a picture profile, it saves it so you can switch back. Say you make your profile "Cinema" have a low backlight for a dark room, you can then set your "Off" setting to have brighter backlight for when the curtains are open in the daytime. You can switch profiles with one click of the "AV MODE" button.
judder: any specific videos that I should test with? None from the computer as far as I can tell (tru motion on or off), can't comment on DVD's or BLU-RAYS however. My friend has an older 47" LG from maybe 3-4 years ago and I find that this new 2012 model has little judder in comparison to the old model.
clouding: None. Image is bright and uniform.
screen door effect: using it as a monitor, sitting either 3 feet or 10 feet away can't say that it bothers me at all unless I'm less than 3 feet away. I'd say that screen door dissapears at about 4 feet away.
Annoyances: If the TV loses power, you lose the time (clock resets). You have to click the input button multiple times to get to the right input if you're using the LG remote. I wish it had a auto-input detection. The black level is affected when you look at the TV from a low vertical angle (TV too high up in front of you). Touch buttons on the front make no sound I wish it gave feedback as to whether you hit the button or not.
Plusses: Nice remote, good looking tv. Solid construction. Swivel base. IPS panel pretty much guaranteed (bought mine from Costco for $680), just check the serial no on the cardboard box. USB function works very well on small and big hard drives and flash memory. Optical and Analog sound output to feed into an amplifier or speaker system (you can use the TV to switch inputs instead of routing everything through a receiver). Plenty of inputs. Cable Receiver works great on it. Colours are not affected by viewing angle. Power light indicator is very small and dim unlike other TV companies which make their TV's distracting.
This TV is pretty bulky compared to LED however unlike LED, it has no clouding or unevenness. The built-in speakers are pointless but work (same as every other TV out there).
If you have any questions, ask away
I'll add more as I think about it.