The only one I use with that Istick is the 1.2 ohm coil . The others require too much power (for my taste) including the Ni200 coil that runs best at not only high temp (which you can do) but at least 50 watts (which you can't do).i have an Eleaf istickTC40w and don't know what type will work best for me. I prefer flavor over cloud, but still like a decent cloud thanks in advance!