so i always thought people who despised kanger coils so much were exaggerating about the terrible quality control. i never owned any kanger products but last week i needed a new tank for my ego (which i only really use if I'm going to be in a crowded place to stealth vape) and i picked up an aerotank mini and just for the hell of it i picked up a standard aerotank. i tried both tanks out and was pretty impressed with the flavor and airflow systems. a couple days of heavy use passed and it was time to change the coils. i popped out a coil for each tank, screwed them in, aerotank mini: dud, aerotank: dud. other three coils in the pack? all duds. 10 bucks down the drain and now I'm terrified to shell out the money for another pack. so if you never believed how terrible kanger coils really are, believe it. if you need some decently priced tanks, you can't go wrong with aspire. they make good coils and out of 10-15 packs I've bought i have only gotten one coil that wasn't functional out of the box