After 18 months of vaping exclusively, I have the Billow, a few different Orchid incarnations and a few RDAs and have tried super sub ohm fog machines but at the end of the day i prefer a 1.2-1.5 ohm kayfun build at 15 or so watts with mouth to lung hits. Its still kinda analog style but it works for me. Whatever works for you to keep the tobacco away is the best vape setup. In 35+'years of smoking, i never remember lung hitting being an option unless you wanted to cough your eyeballs out of the sockets