Some people dog on ABS but it's really not that bad of a cheat. I was surprised the first time I used it. It's definitely better than Ring-1, as Ring-1 gives no fucks about your FPS.
Aimbot works pretty well for an external hack and if your computer isn't ancient, you won't get much esp lag on items and such. Only really occurs on the maps that give shitty performance like Streets of Low FPS.
It's also one of the few cheats that will show an item in a player's inventory if you have it in your filter.
You can be sure you won't get banned using ABS unless you go really hard and wipe lobbies for hours.