I am struggling with the same decision between the LG and Samsung. I am coming from a Sony 940C and have already tried a Sony 85X900F and Sony 65A9F. The X900F had entirely too much blooming and the A9F while looking spectacular was simply too small after years of owning a 75". I am tempted to go with the Q90R, but the I really do love the contrast of OLED. I have also considered waiting for the A9G or maybe just ponying up for the Z9G, but I think divorce might be in the picture if I go there. We are actually moving this week to a new house so ideally I would like to get something this week so I'm not schlepping 75"+ TVs around the house. The TV will sit 90 degrees to a series of large northwest facing windows (with blinds) so reflection rejection is important and seems to be a key win for the Samsung. I am curious, did the OP purchase a set yet? If so, what and why.
Sony 77A9G / Marantz SR-7012 / Martin Logan Motion 60XT, 50XT, Motion 4, Motion FX / 2 x Rythmik FV15HP / AppleTV 4K / ShieldTV