Love them easy to use and inhale i dont feel like im choking everytime i inhale it like others ive tried as a smoker of 20 a day this has made the transition from cigarettes to this really easy and hopefully it will kick start my will power to actually stop smoking. Its light and easily fits in the little pocket in my bag. I chose the ePen in red and i LOVE it ive found nothing wrong with it. I may buy all the colours just soi they match my outfits. Fantastic