OLED is AMAZING. If the source is good, I'm still in awe after six months of acclimation.

Previous TVs were Pioneer Elite Plasma and Samsung Plasma. The Elite series being the highest rated TVs from CNET for years until the LG OLED. Only wish my space was larger so I could get a bigger one.

I use Expert 1 w/ no adjustments for most of my viewing. I assume Expert 2 is identical. Both being user settings for the user to adjust. CNET stated this was closest to their optimal settings.