Gran...EXCELLENT review!!!
With you now having a "TC-capable" GS Tank and a couple TC Heads...sounds like you're ready for the "Big Time"!
$27.75 w FREE shipping (code SUMMER15 )...less than the cost of ½ carton of analogs...and you can move up a notch in "e-cig vaper status"...
Eleaf iStick 40W TC Starter Kit - $37.00 : Rocky Mountain Vapor, The Mountain top of Electronic Cigarettes