I am not sure if it has something to do with my specific store lighting or just the new finish on the screen, but both my display LM6700 and LM7600 seem to darken quite a bit off-axis. I tried the 3D using the 2D-3D mode and a video from the built-in 3D app. They looked pretty good and the conversion looked better than I expected, definitely better than the conversion on the LW5600. I don't recall noticing the FPR "scan lines" as much during the short time I watched it but I was watching mostly content with a black background so it may be I just didn't see it. The FPR lines really bug me on the 5600.
Keep in mind that it's been a busy weekend so I havent had too much "one on one" time with either set.
ht Panasonic 60" ZT60, Monitor Audio: Silver RX6, RX Centre, RX1; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D, Panamax M-5100PM
2ch Sony 32" W650A, Sonus faber Toy Monitor, REL T3, Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Apple TV, Peachtree Audio DAC•iT, Panamax MR4300
pc Monitor Audio Radius 90HD, Audioengine D1, FiiO A1
+ Sony 65" XBRX850B, Sony BDP-S5100