Hey, I'm using a Vapir One as well. The most helpful advice I've ever heard is take a look at your leftovers. I've been going from 180 to 190 and then all the way up to 204. The herb that comes out looks mildly green with a slight yellow at 180, light brown/yellow at 190, and dark brown with a little yellow at 204. I'm getting used to it all too, but vapefiend is right about the toxins. I'm thinking I'm going to stick with 190, cause that gets me floating without all the throat irritation from toxins.