I've used it and not used it, and I've found very little difference. I'm not sure that, if I didn't know, because I filled the cartos, whether I'd be able to tell the difference. I'm not sure I'll order more when this is used up. If you find a different result, I have some 12 mg Turkish tobacco w/ WTA from Aroma that I'd trade to you for some flavors with low nic (like 6 mg). I find higher nic levels make me cough too much.