I have used my Baby Beast for about 6 months now and have tried every coil, the Q2 is by far my favourite. The coils last about 2 weeks and the flavour is the best I have ever tasted from a sub-ohm tank. When installing a new coil all I do is prime it (in the wick holes) and leave it in a full tank for about 20minutes before starting at around 35w and making my way gradually upto my standard 55w. It works a treat.