Video Games

It's all a little confusing but basically,

C or G (or B) is the product range:

B - Worst panel / worst features
C - Best panel / mid range features
G - Best panel / best features

The X is the generation (6 was 4 years ago, 7 was 3 years ago etc).

So the C9 was last years mid range OLED and CX is this years version.
The CX & GX have exactly the same panel and features (apart from sound output) so if you get that, the picture will be the same as my tv. The difference is the G is the Gallery range which mount completely flat to the wall whereas the CX has a lump and the back which means it doesnt.

Simple.