Just a heads up for anyone who decides to use any of these monitors as a PC monitor. Contrary to what some people have been saying, I have found the MVA panel to be very unsatisfactory for PC use because of the poor viewing angles creating gamma shift. The 39" is guaranteed to be an MVA panel made by AUO, since no other manufacturer makes that size. The 42" will be panel lottery.
I got the 39ln5300 of which extensive calibration and review has already been done in previous pages. However, at a distance of 2.5-3 feet, the gamma shift flanks the center and goes towards the edges, consuming half the image. I can't believe how some people can think this is remotely IPS worthy in viewing angles. I have a gray wallpaper and grayish theme in Windows. There is a middle circle of dark gray, which is the right color, and everything around it extending to the edges is light "fluffy" gray, the kind of fluffy reflective look a gray furred plushie would have. I switched to a dark purple theme. Same thing. The contrast and blacks are clearly superior to IPS, but they aren't worth the viewing angle issues. I can't look at a solid block of anything without the fluffiness change caused by gamma shift by poor viewing angles. You need to sit far away and in the center to get a shift-free viewing experience, which defeats it's monitor credential's unless its just an HTPC. As just a TV, anyone viewing it more than 30 degrees is gonna notice the shift on darker images very easily.
The other big issue is glare. I don't know what LG uses for its coating, but it makes the screen reflection look vague and oily. You would think the vague-ness means its semi-gloss and not very reflective. It is actually the complete opposite. Whenever there is something dark on the scene, I can clearly see my face very brightly against it. Some LCD screens reflect larger but less distracting solid chunks of light. The LG reflects silhouettes and everything very clearly. My current TV that I am using, which is pretty old, has a thick gloss layer that has a very dim reflection. None of the strong bright reflection the LG has.