I have a mini and a nano, with an istick 30W. I've only been doing .5 since I've got them because I thought that was the whole idea to get the most from these tanks. I just tried a 1.2 and the enhanced flavor was incredible. I liked the increased vapor, but not at the expense of flavor. The 1.2 is now giving me enough vapor and nowbetter flavor. Thank you for taking the time to post this.