If you want to try the new(er)
coils that have cotton rather than silica, that helps as well. I'm going on 12 ml without any loss of flavor/vapor and no dry hits so far. This is my first one that I've tried, but if they're all like this, it's worth the extra $1 for the 5-pack of
coils. I also have the Aerotank cotton
coils, haven't tried them yet.