Well , I aint even gonna say much this thing is better than any mech mod out there . You guys told me to start building higher ohm coils and i did , I build a 2.3 ohm coil . My 2*18650 box mod performed like .... with it , I had to hold the button for 2 - 4 secconds before draw and i still got minimal vapor . So i got the istick 50w , i set it to just half of its full potention , 25W and it is firing up the 2.3 ohm coil as soon as I press the button and I am getting extreme vapor production . Also size i knew it will be small , but i can not believe how small it actually is , absolutely amazing , build quality is also amazing . I should have moved from mech mods to VW a long time ago .