For me, with 1.8 ohms at "only" 3.8 V (lt. Packaging they are to> 5 V withstand) in Aero Tank V2. Thus sufficient steam generation and for me the best taste.
But: Despite rather low load (equivalent to about 10 cigarettes / day) with about 2/3 of the permissible voltage (= 50% of rated power) siffen these things after a few days and make shortly after all limp.