I really like the Cohiba SC. I don't have a clue as to how authentic it is, but all I know is that's it's a great tobacco leaf flavor that doesn't seem to have much else added to it. Your post reminded me that I have some, so naturally I had to dig it out and whip up a new recipe.
SC (China) Cohiba 1.5%
Ina Cuban 1%
Ina Western Blend 1%
Ina Cherry 2%
Ina Vanilla 2%