I've been vaping for over three years. My go to set-up these days is the Kayfun v4, but have a subtank mini, tilemahos v2, and aeolus in the rotation. This tank blows them out of the water! Just received today and put a single coil in it. Loaded with 90% VG and this thing vapes like a champ. So surprising for such a cheap atty. Got to give UD props for this AND the juice "valve" is executed much better than the Kayfun. I guess KISS still applies . . .