So, I bought a kbox mini-c about 6 weeks ago. It's my first vape mod, besides the kanger evod about 2 years ago. In the past 6/7 weeks, I've been cigarette free as well, but vaping ALL day, which has been a bummer on my batteries and coils... I go through one batter in about 1/2 a day. And have been changing coils about every 3 days or less. I also love how easy it is to change the coil in my tank, but I cannot control airflow. I want to get a new device and possibly a tank, too, but am scared I won't like what i get. (I've tried the kangertech evod pro v2, but even opening the air flow all the way, I don't like how hard it is to take a pull) Is there a mod and tank set that has easily changeable coils that won't burn in 2 days, a nice airy pull that I can change if needed, and has a battery that will last longer then 6-8 hours?