ust since I didn't see anyone ask or you state, what is your pg/vg ratio? And.. when you get that harsh vape.. have you noticed your cotton turning brown, indicating a burning? I'm vaping at 100w-200w using 3mg juice 20/80 pg/vg. The only time it gets "harsh" is when I don't have my wick "core" tight enough. (the part inside the coil) Tighter core=harder to burn the cotton. Aside from that, sometimes I do get to much vapor, kind of like breathing in water. LOL. But I figure that is just something to get used to. Anyway.. pg gives more of a throat hit than vg, so higher pg would be harsher. It is great when you are trying to quit smoking, but not so great when you try to chase clouds. I'm just starting some DIY ejuice. 100% vg, 0mg nicotine. That is just for clouds and trying to make those GD Os. *curse you Jason and your stupid jellyfish*