I've been using Hangsen RY1 at 2.8% 18mg 70/30 and it's very accurate American Cig flavor.
I have some Hangsen RY4 from RTS.
I think I'll try it at 3% after browsing the ridiculousilly ginormous RY4 thread. spelled that way on purpose.
Have you experimented with Hangsen RY4 yet?
I'll make 30ml now but some feedback from anyone using similar pg/vg/nic would be appreciated.