A:Answer G Series is the high end models. Their best panels with more brightness. They are designed to fit close to your wall like a picture frame (you can buy a stand separately also).
C Series is the mid level, usually slightly less brighter than the G series but with all the other tvs features.
A Series are the lower end models usually missing a few features the others have. Like a older processor or less HDMI 2.1 ports, etc...
You can look at the specs of all 3 models and see whats missing from A compared to the C and G. If you want the best, G, if you want close but at a better value C, if you want the cheapest A (if you dont mind what its lacking).
Hope that helps!
