It is a great little device, I love using it. I don't think I'll ever use anything other than variable wattage devices again, for day to day vaping, this is so easy, and hassle free, especially when switching from tank to tank to atomiser.
VV devices are great, don't get me wrong, but they are so time consuming, having to adjust settings when changing atomiser resistance or tank. I like being able to just just switch and vape, getting the same great result every time, without needing to mess about