i use a few different ones! since i use sai i'll just screen shot them for ya the first one is that super thin sketchy one, the second is the brush i used on my latest piece for the main sketch, and the last is the brush i sometimes use for some really fast stuff or for blocking out the base pose
No problem! Pretty sure originally all of those were snagged from someone else and then I fiddled with them till they were to my tastes haha