My 55LW5600 showed up yesterday (the BD670 Blu-ray player that was part of the bundle showed up last Saturday). I only had time to get it hooked up and watch for a little while, but thought that both the Cinema mode and the two ISF/Expert modes looked very decent right out of the box, whereas Standard mode was a bit over-bright, etc. (And "Vivid" mode even more so!). I didn't look at any real 3D content, but did turn on the 2D->3D conversion, and in fact the artificial 3D didn't look too bad. More "layered" than real 3D-camera 3D, sort of like 3D animated content.
Next steps are getting the wireless networking going for both TV and player. Then on to the settings...
I noticed that in the initial power-up sequence, it lets you choose between setting the set up for actual use ("Home"), or for store demo mode.
Did anyone try using the store demo setting? Does this actually give access to some built-in store-demo content? Or is it just a way to set the picture defaults to "Vivid+++"? I guess I also don't know if there is a way to go back and bring up the store demo mode, and then return later to "Home" mode.....
I got my combo from Buydig.com, as they had a LARGE discount (via a coupon that showed up at check-out). (The price was so much lower than anyone else, that I kept thinking they'd contact me with a correction.) It took a while for the TV to get trucked across the country, but everything showed up on schedule, and in good shape. Don't know if the special deal is still there, though. (Later edit - no, the current price has been raised up a couple of hundred bucks, although it is still a good price.)