So far I've tried caramel and apple prefills, and I can see how changing the DAV setting can make a difference. I'll be trying a couple more today. What I'm really looking forward to is seeing how some of those flavors with the tank with the 2.0 or 3.0 SC cartos work out with the DAV. I do have the Vanilla Shake in juice and a tobacco flavor and will try those too. I ordered the SC's and it'll be a couple days before they come. Then will be better able to choose a couple juices. It'll all come back to keeping the juice flavors as close as possible to the prefilled choices. Think I've got a pretty good shot at it thanks to all your help!