Hi everyone! I have only been vaping a year, and have been on the eLeaf iSticks varying from 30w to 60w with TC. I like the 18650 batteries instead of internal, and wanted to move to a device that has dual 18650 instead of the single, mainly for battery life as I vape with a kanger top tank with .5 Ohm only going up to 35 to 40w max, same watts with TC ranging from 450-500. I am wanting to try something different than the iSticks. The Siegelei 213 caught my eye, but reading some other posts makes me nervous to buy it. I need help, any recommendations for what is best for me with my tank and ohm/wattage preferences, Sigelei or others? Thanks!