I have the ec9300 too and use pc mode with game mode, you find the input lag ok for you? My Leo Bodnar sometime shows as low as 29ms for lag but can jump up to 45ms.... ugh... Even when it shows 29ms it feels much closer to 45ms.
It's fine for me but just borderline acceptable. I was hoping the 2016 sets had less or the same input lag under PC mode, but going from that rtings comment they may have more
Do you think I'd be ok with the C6? I know the B6 has more input lag