I dropped from 24 to 18, then to 12, then to 6 and now I use 3.
Of course that means that if I find a juice I like I end up buying one of 6 and another of zero and mixing them to get to 3.
I have my first order for DIY placed, hopefully I can make something vapable. If so, I may go ahead and try a small bottle of 1 or 2. Right now 0 nic isn't working for me, yet.
Then again,I never cared about "throat hit," so YMMV.
I started with 6 and am still using 6. I did try cutting it with 0 to make it 3 but it just didn't do it for me. I'm not saying that, eventually, I won't try again but right now it's 6. Hopefully I'll be able to do it sometime and then all the way down to 0.