My experience so far with the 47" LM6700 :Note: keep in mind that this is a 5th replacement for 4 defective Samsung panels.
1) The build quality seems to be superior to what I saw with Samsung. The LG has a metal band around the panel that prevents flexing. The Samsung, OTOH, seemed flimsy.
2) Even the shipping container is better - there are hard plastic covers on the R/L edges. They are handy for removing the panel from the shipping box, and moving the panel around. No finger prints on the panel.
3) After a few days of watching various program material, the LG's picture is better than the Samsung regarding these parameters:
a) The Rec.709 color tracking is just about perfect out of the box. Skin tones are very natural. The Samsung tended towards yellow in highlighted areas of the face - not so with the LG.
b) The picture is very dynamic, and with a good source, is very film-like with depth. The Samsung was much flatter.
c) Apparent resolution/detail is equal to the Samsung
d) Picture uniformity is superior to Samsung in every way. Very little vertical banding, no apparent horizontal banding, no hot spotting, minimal flashlighting that never shows up in program material.
e) Off axis viewing is superior to the Samsung
4) The one area that Samsung beats the LG is absolute black levels. This is well documented in the linked reviews in this thread. I'm very picky about black levels, and I do notice a difference in absolute black compared to the Samsung, but frankly, it is not an issue with any source I've watched, and careful adjustment of picture parameters can control this to my satisfaction.
5) The UI is - well, interesting. The 'wand' is a bit of a challenge for me, I'm not a gamer LOLZ. Also, when dialing in picture parameters, there is too much menu on the screen. The Samsung is superior to the LG in this regard, but since it's not used every day, no big deal.
6) There is no obvious menu control for MotionFlow, this seems like a potential problem and inexcusable for a TV in this cost range. I hope a SW fix is coming soon. That said, the default setting out of the box seems to work fine for all source that I've watched so far.
7) Don't really care about the 3D capabilities, although current reviews state it's the best in class. I'll check it out this weekend
I attemped to begin the calibration process this AM:
1) I lowered the Backlight to 70. This seems to be the sweet spot - ample brightness with very little flashlighting.
2) I also set the Contrast to 70, and I see all IRE steps.
3) I set Brightness to 50. Good black levels without crush.
4) With the screen set to 1-1 pixel mapping, the sharpness for both V/H is set to 0, no need for it.
5) Color is set to 50, tint to 0
6) All other parameters are set to Off at this time. This weekend, I'll play around to see if any of them improve the picture. I doubt it, since I'm a minimalist when it comes to video.
I'd love to hear from other owners. This is definately a keeper.
