I tried Vodka, Johny Walker, Dark Rum, Caba Waba Tequila, Tangray 10 Gin, and Makers Mark....
None of them except Vodka really worked out for me. Most of them thin the liquid out so much its hard to vape. I could taste all of them, but mostly it just alcohol tasting... good throat hit on most of them though.. different, but good.
So now I mix Cola or Pepsi and Whiskey premixed juice and add some VG.. very good....