I've tried all brands and all types from BLU 'shisha' pipe to e-cigs. For me the Vype pen is the best product I've used to date. One of the main reasons is that it is extremely 'smooth' and does not feel as toxic to my body VS competition - not sure if that makes sense to you. The reason I've rated it a 4 and not a 5 is the only negative point for me is that just misses out on the 'kick' to the back of the throat you get from smoking or using certain other products which for a smoker is all part of the sensation. Again not sure it makes sense to you. All in a ll great product and I have recommended it to colleagues and as you will see form my purchases I have already bought three pens two of which are for colleagues in Germany where VYPE is not available.