tl;dr section ================================================== My old Sony KDS-50A2000, a rear projection SXRD based display, looks to once again be developing the green shadow of death. As you may know, many SXRD models were plagued with a greenish tint after prolonged use. That happened to mine, but since it was under an extended warranty, I got a replacement light engine costing about $1200 for free. However I'm now out of the warranty period. I had it covered for 5 years and since I got this display as soon as it was available, it's now been over 5 years. The problem is barely noticeable at this point though. i only saw a slight greenish shadow when I had the pale blue W7 desktop displayed. And that was only over a part of the screen in the lower right quadrant. I can't see it with other backgrounds, but it's definitely there. I still have a spare bulb for the unit so I intend to run it into the ground. The problem is there's no way to know how quickly the problem will progress. The tv is on pretty much 24/7 even though I probably only watch 3-4 hours of financial news and maybe 1-3 hours of entertainment programming per day. That's because I tend to watch in small increments and often forget to set the shut off timer before I go to bed. =========================================================== The important bits Anyway, I might soon be in the market for a replacement, so I'd like to hear people's opinions (with supporting evidence if easily available) on what to look for in a new set. The max diagonal size is 55" since it will mounted on an industrial shelving system. This rides on 4" wheels so I can reposition it easily. At 55", the width comes in at just under the 48" width of the shelves (47.94"). However since the support columns are about an inch in diameter, I'm probably going to be limited to 50" (43.58"). I'm still open to a 55" screen though since I don't see an inch on either side being really critical. I like the idea of full LED backlighting but won't consider anything with edge lighting unless there are reviews from reputable sources that indicate the problems with this mode of lighting have been overcome. I'm not too concerned with the cost - within reason. I think I paid $3500 for the Sony with the warranty and I wouldn't balk at a similar expenditure now if I know it will be worth it. Thanks in advance.