They have released two 77" consumer models but at the time I purchased my 75" it was basically double the price. Now they have dropped a fair amount in price with G6 being $11k and G7 is $13k, still more than what I paid a year ago though for my Z. I have the 65" E6 which is the same year as yours. While it is better in the 2016 models, you are still rolling the dice since the technology of panels this large is still relatively new and people are still swapping out panels. Yes, with gaming mode enabled on both, the LCD is faster with better motion resolution. Not by much but it is there. Also LG recently screwed up HDR gaming mode with their latest update which is frustrating. It is not a fair comparison to compare the price you paid with a ton of discounts for the lower tier OLED to a flagship LCD that has a 10" larger panel. Anyway, really my point is that LCD has come a far way and it beats my OLED in multiple different areas whereas the OLED has its strengths as well. The black levels on my Z are nothing short of amazing. Until you start moving off-axis, you'd be hard pressed to think it wasn't OLED but my OLED still edges it out in pure black levels for sure.