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 TC-P60ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Monitor Audio Silver RX1, REL T3, Apple TV, Peachtree Audio DAC•iT
lr Panasonic 50ST60, Sony BDP-S5100