aspire suggests running 70-80 watts i had it on only 55 and to be honest the metal tip got so hot it burned my lips even with the air vents all opened..i think i will change to the 0.5 ohm coil and stick to the 30 watts they suggest..not sure how some people can handle it at that wattage..not due to the strength of the vapor but due to the heat created on the metal tip..does anyone know if they make rubber tips for the atlantis v2?