I don't think that the 65" LW6500 uses an IPS panel. The viewing angles on our display model are horrible. I have posted here many times about how bad it looks - visible banding, flashlighting, and 65" is just too big for passive 3D IMO. I would avoid it. The Sharp 70LE735 is probably your best bet. There is a a new 70LE745 that is showing up at retail which is edge lit instead of backlit and lacks the quattron panel.
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