Sometime you would get the unpleasant taste given off and actually it is a symptom of firing too high voltage at the coil in too little time. That means that the wicking process can not keep up and as a result the wick dries faster than it soaks up liquid. You should remember that once you burn your wick, the coil head will never taste the same as before. It can not saturate anymore juice in the burnt area, and will be far less efficient. Keep in mind, wattage and voltage work in sync. High wattage allows more voltage to pass. Low wattage limits voltage to the coils. The higher the resistance of your coil, the less wattage you can apply to it. The lower the resistance of your coil head, the more wattage you can push to it. You should always start with lower power and work your way up. Nowadays organic cotton distributed throughout the surface combined with huge coil head juice holes for better saturation. Aspire Nautilus is a fantastic tank with good wicking process and is reviewed positively for its good flavour production.