Don't do the ohm / voltage thing , but I use both SR atty's and carto's , on my Reo , at 6 volts . And my carto's last a minimum of a week . I actually prefer the carto , overall . Less gurgling , and no
juice in the mouth . Just squeeze , quick , no fire toot , to distribute the
juice , and then your ready to vape . Mindless , hassle free
vaping .