Georgia. The very first coil that came with the tank was somewhat ok but nothing to write home about. Since then, I have gone through through a pack of the single and dual coils with no luck and giving each coil an opposite to break in as I have read that Freemax’s coils take a long time. I’ve used a multitude of juices from fruit flavors (lemonomenon by noms ejuice, simple E-Fruit by My Vape Bar, strawberry banana by Smoothy Man) to haute mocha from Okami to house juices of all kinds. 3-6 nicotine freebase. As far as watts, I’ve gone from below the recommended range to the max of the range, adjusted airflow and every other thing I can think of or have read. There again, I have tried soft hits, hard hits, long draws, short draws you name it. I’ve personally had the eleaf melo4 and the Smok baby V2 but have tried the Smok prince, Horizon Falcon, Sigelei Moonshot 120 and used rebuildable at a vape shop. I’ve smoked for a long time but never more than a pack a day. I really want this to work as I have read good things about it. But now I can’t use it at all because none of my mods are recognizing it. Says no atomizer. I’ve taken it apart but it back together and tried a new coil with no luck. I honestly believe it’s something to do with the tank itself. As a far as the Sobra, it’s bad reputation is better than Freemax’s good one so far.