Ok thanks ! I got the M2 0.15 direct output in the tank right now . Much better flavor and airflow . I also have the M2 0.25 and I ordered X4 coils .You can vape on it fine, it just won't be the best experience. It's better to get T6 coils. They will last you longer and give you the best experience all around. Good luck with that baby beast though. It gets stuck soooo often that I'm considering just throwing mine away and getting something else.