I am using 28g and 500# mesh on my AGA-T2 and Silver Bullet with a protected AW 18650. With an 8/9 wrap I am sitting at 1.5ohms and damn does this thing blow clouds! The wicking can barely keep up with all that surface area being heated. Def can't use high VG liquids. I tried a lower resistance coil and it was good, but I wanted to use as much real estate on that wick as possible. The 8/9 wrap is pushing the limit for sure. My 18650s will make it barely 24 hours now, when they used to go a few days on my vaping style.