This is the 4th e-cig I have ever used. The first 2 I owned were cheaper models and I had the hassle of pouring in the liquids, changing the filter and also the hassle of having to 'warm themup' before using. The 3rd one I owned just leaked constantly and was so bulky I started to smoke cigarettes again.... The vype e-pen is fantastic. The liquids just screw in - no mess at all, and changing the liquids is easy and you don't have to wait for the old one to run out first! Just change them and off you go. The e-pen also feels nice in the hand and the mouth piece is nice and flat and feels more natural that the round metal tips which usually come with an e-cig. I have recommended this already and have only used it for a day! The price is so low considering how good this actually is. It feels and looks expensive and I have paid over £50 before now for an e-cig that leaked all the time. 5 stars. Brilliant.