I second that comment of the LA red licorice...it blows. FW makes a great red licorice flavor, tastes just like old fashioned red vines. But if you want a more twizzleresque version..
14% red licorice (FW)
3% raspberry (TFA)
3% sweet strawberry (cap)
sweetener to taste
You could easily switch out the raspberry and strawberry to whatever you have on hand.
As far as Black Licorice is concerned, I like Lor Anne black licorice. You can start at about 5% and work your way up to a level of licorice that is right for you. Absinthe, from TFA is also good, but has more herbal notes in it. And if you want something with that black licorice, try this.
8% grape juice (TFA)
8% Absinthe (TFA)
sweetener to taste. (usually I use 1 drop per 2 mil but I have a sweet tooth)
1 drop lemon juice per 5 mil
This flavor is one of my favorite licorice type vapes, and I have a few friends who really like it too.