I started out with 30mg nicotine when I was quitting smoking, and it made a huge difference in my efforts to quit.
However, I believe it is now too strong for me. The first few hits I took were horrible, and even though I can
vape on it continuously now, it still hits really hard.
As far as flavor changing, I have gone down to 24mg, and I have tried some of my buddies 18mg and 16mg and
have yet to notice a flavor difference caused by nicotine. That being said, pg/vg will drastically change your flavor
when you start changing out those levels, such as going from 50/50 to 20/80 pg/vg.