so ive been vaping for about a year, i run a kaos and a smok alien mod with a super mini tank from tobecco. For a while the tank was great but then i started to get coils that wouldnt last me more than a few hours abd as long as one day. I usually buy packs of five from my local vape store and about 3/5 coils would give out after a few hours. I vape at a pretty modest watt range of 40-55 watts pending on the juice. My question is simple, do tobeco coils have a history of being bad? Am i missing something? Or am i just geting really bad bad bad luck?