Well I've finally got the C6 setup and all I can say is wow why didn't I get one sooner?! Immediately noticed how deep the blacks are and how great the image looks. The OS is snappy and very easy to use, the viewing angles are stunning and I am pleasantly surprised at how good the curved screen looks. The Mrs hasn't had a bad word to say about it so far unlike the KS7000/8000 and 9305 - she immediately noticed flaws for someone who claims she has no interest in this sort of thing!
Anyway it's only been on a few hours and the only thing I've touched so far is setting the HDMI Deep colour option to on for the ARC HDMI port that goes to my amp, not even had chance to update the bloody thing as the other half has been watching MasterChef! Even the out of the box settings to my eyes don't look too shabby! It really feels like a premium product and so far it's worth every penny!