Lg 65" 65c6p OLED vs 86" 86uh9500 LED

[Oled3D>4kBD>2kBD]

Lg 65" 65c6p OLED for $2300 vs 86" 86uh9500 LED for $4000... What would you do? Locally I have found a brand new 86" 86uh9500 for $4000 and have been giving it serious thought... Is the super large size worth the poor contrast and blacks over the superior quality but smaller 65" OLED. (Price is low enough I could try 86" out and resell later at minimal loss I think.. And I actually already own 65c6p.. But really wanting to test out large TV)

Will be used in a dark room... Say 40% 3d bluray use, 30% 4k bd, 30% misc other 2d streaming, sports etc. I can adjust my seating from 6-11 feet.

Put even simpler, if price was the same which would you choose to spend your time watching 86" uh9500 or 65" OLED?

(Another option... I've also considered 78" 78js9500 but largely ruled it out due to active 3d... 3d is important to me... Anybody with experience find js9500 active 3d to be as good/comfortable as lg led passive 3d (such as lg uh8500/uh9500 series)? I have over 100 3d blurays.)