I have a question! im wanting to upgrade to a higher wattage device, right now im using the mvp 2. Im thinking about the istick 50 watt with one of the subohm tanks, but I don't understand something. Say im using a 0.4 ohm coil on a subohm tank, and vaping on 30 watts, how does that not burn the wicking in the tank??? and how long on average would that coil last before I would need to change it out??? Might be a dumb question but I would appreciate someone to explain this to me before I go out and buy something. Thanks in advance!