After about a month of regular use, I can say that this e-cigarette is worth every penny. The build quality is very solid, the design minimalist and classy. The assembly worked without any problems, even that all parts are included in duplicate, speaks for itself. The key for me was with this purchase the high similarity to a normal cigarette, which when handling any major differences exist. The battery power of the cigarette, as well as the PCC (Personal Charging Case) are in my opinion very well, so far I've only managed it once to empty the battery of the E-cig completely. However, I'm not a heavy smoker, my stint before Eroll was approximately 1 pack of cigarettes per day. In addition, 3 tanks for the E-Liquid are included, in my experience, but well worth it, mitzubestellen equal replacement tanks.
In summary, I no negative aspect is not noticed, but I still have not tested any other products, therefore I lack the comparison.