At 3.7 volts through an LR510 atomizer of indeterminate brand, i puff this mix:
4 parts Alien Visions Havana Gold
1 part Vaporenu.com Welch's Grape
1 part Woodford Reserve bourbon
nic is less than 20%
Next batch I make up I'll be swapping in some Root Beer Jack has -- don't know the vendor -- in place of the grape. I like the wood-smoke finish to the flavour it gives.
Edit: fixed proportions