I was really surprised how easy the switch is on the e-cigarette. Had initially made me on YouTube clever on what to watch out. So far I had no problems with the eZigarette. No Siffen, nothing. By matching Liquid is like a hookah on the go. Although I doubted that the eZigarrete can be a substitute for Pyros, I was a better belehert and have absolutely no desire to regular cigarettes.