I use a lot of Lorann flavors.
Grape,Champlain+any fruit,raspberry,sarsaparilla (a few drops),pear,peach,root beer,red liquorish,liquorish,tuit fruty.All good at 15% to 20 %.I have not found a bad one.Beware of the oils they do not nix with water.
Having the additives,Smooth,sweet sour,vape...