subox mini is a great little kit I use mine in rotation everyday with the mini usb port you can charge it or just pop in a spare battery best of both worlds
So far so good Bebop I hit new coil It jumps i let it rest for a min or so its back too 1.2 and a Happy Vape One thing I noticed when I hit new coil it has to jump higher then 1.2 if it doesent I repeat the process