Good points and bad points (03 January 2019)
Yes the coils can burn out fast in a day or two if you over heat it alot, or, if the tank is let low in juice. These coils can last 2 weeks ish if you keep the juice at least half way up the 8ml bubble glass, fuller the better. It's like a sponge in a glass if the water is too the top of the glass the sponge will be soaked and protected, have a dribble of water at the bottom and the sponge will be dry and burn. With the standard 2ml glass you'll have to top up too much. Your glass can be changed to 8ml. The Good point is you will get good clouds, the higher the vg in the juice the better, and the flavour is great too if you have the power (run at 80-90w at least). The T-10 coil gives the best flavour! (Because there is 5 separate holes in the coil) . However the mesh strip coil last longer a day or two or three longer. I've not had any of the other newer tanks/coils to compare to. I say these are good coils.