IVe noticed a huge difference from vendor to vendor in the same nicotine levels as far as TH. Some vendors i can chain vape 18mgs all day and not have a problem. Other vendors I vape 12-9 or even 6 mgs and i will get a head rush off the nicotine. It very weird..
VCV was kind enough to send me bottles of Harvest Berry and Straw Gwab in 6mg, my normal at the time was 12mg, with this very thought in mind. It made no difference. Didn't help at all. So I don't know if it's the distilled water, the flavorings, or both. But I can tell you that the difference in throat hit between VCV and TVK at the same strength is huge.