I will reply properly later but for now, don't rush out and buy a C9 on the misconception that it has Autocal built in. It does not!
To calibrate you need, as a minimum:
1. A pattern generator. Hardware which can accurately create the patterns (patches of colour) on the screen that the meter then measures.
2. A meter to measure the light coming off the screen - colour and brightness.
3. Software to control (1) and (2)
My personal setup with C8:
1 = Raspberry Pi running PGenerator software, connected via HDMI to the TV
2 = SpectraCal C6HDR2000 meter, which came bundled with:
3 = SpectraCal Calman software.
The ONLY thing that has changed on the C9 is this:
1 = built-in Pattern generator, with patterns created by the TV's firmware.
Everything else is the same! You still need a meter, and you still need the software!
I don't know why people think this, but you are not the first. Somehow, a LOT of people have made the impossible logical leap from "built-in pattern generator" to "built-in meter, software, and pattern generator" 🙂