Vape the Rockies, like Vapenstein said. It's really different than any other bourbon/whiskey I have ever tried and I think I've just about tried them all. It's flavor is bold and it doesn't need to steep. It does have a smokey-sweet taste that I can't take for too long and only enjoy vaping it in the dead of winter, after a day of skiing, by a fire
Other brands, like Dekang(Vapor4Life, Cignot, Litecig, Liberty Flights) is like vaping PGA with a little bourbon mixed in but it loses it's taste faster than a piece of full sugar bubblegum. Many that are mixed fresh (Ms.T's, Gotvapes, VaporRenu and Gormet Vapor) have no discernable flavor at all(even after months of steeping). My Freedom Smokes takes the cake for just "Blech", as it is like vaping moldy dirt! Good luck in your quest and if you come across something great, please let me know, as I'm still looking for the perfect bourbon juice!