Kayfun is the best choice IMO you wont get better flavor unless your dripping. Look for the Ehpro kayfun lite+ V2 it has adjustable airflow and is the closest to the real kayfun I have found so far. If you like the genesis atomizers go for the Kraken, I have a .6 build in one using stainless rope wick, 2mm Eko and 8 wraps of 28g and it hits like a truck, never burnt, never dry. It just wicks like crazy flavor is awesome and vapor insane. you also never have to tilt it with my build. I ran the tank dry today on it, and still got 4 more hits before it started to taste dry, I take 7-9 second draws off it.