The pro tank2 is brilliant. Had a problem with my battery however vype customers service was fantastic and sent a replacement immediately. Working like a dream now and I am a very happy customer who has quit smoking for 2 months now with my vype. Totally recommend the pro tank2, it has a good release of vapour and great battery usage time. Also holds a good amount of liquid so not topping up as much as with cheaper versions. Thank you vype x