How Good is VAC

The real question is did you pay for your cheat and how obvious do youdo you play. some my also consider what game mode.
My tip is "if your going to play ranked you better be running a paid cheat and closeting"
RANKED = can be overwatched (watched by a real person)
causal is all controlled by VAC and most of the time the bans come in waves so like every 3 months.