Picked up my 55lw5600 the other day from Best Buy
They had a nice deal going in addition to including the family glasses pack. I now have 10 potential 3D viewers! Though 3D is the worst part of this TV (my opinion later).
Have to thank everyone for the calibration settings and tweaks! My impression: CNET was very lifeless to me, though I imagine very accurate and probably preferred by cinematographers. The calibration provided on #2407 was better, but needed more "pop". I like vivid colorful images, though the default vivid setting was terrible. So I tweaked from there keeping backlight below 40, but will still play with them in an attempt to get more "pop". Will probably use Avatar to do this...
Coming from a Westinghouse LVM37w3 (don't recall exact model # and oddly enough about the same price I paid for my 5600 lol), this TV is great. Playing with the settings made blacks, viewing angles and uniformity very good. 2D image is fantastic!
3D however, is the obvious drawback to me. My wife finds it blurry, though I believe she is referring to cross-talk - she claims to see multiple images in 3D mode. I don't have quite the same issue. I do however, find the outside perimeter of the 3D image sort of unclear, as well as notice the obvious halving of resolution and resulting quality degradation. Just felt like I was watching 3D in SD. 3D Gaming was even worse. I tried GT5 and saw aliasing all over the place! Not enjoyable to me. Problem is, passive is what it is on this TV.
I do have access to a Sony family discount and may consider the 55nx720 if it's priced right. I'm hearing 2D is fantastic and blacks and uniformity are great. Plus, I imagine the 3D will get better with current active models as better/cheaper active glasses come out. Aside from price and heft of active glasses, I'd say active is the better tech for image quality in my experience. I want to watch 3D in HD!