I've scanned the whole thread and didn't see this mentioned, so if it already has been, sorry! STEEP your juices!! Most times when you order juice, it gets made right then...or at least from the companies I've ordered from. Some juices (especially Tobacco Blends) can take about 2 weeks of steeping before the flavors tend to mellow out and come together for great tasting juice. I ordered a bunch of Tobacco blends 2 weeks ago and didn't care for any of them. They all tasted like Caramel and something else. Anyhow..after 2 weeks of steeping, I love them all but one.
To steep, put you juices in a cool dark place, like a cabinet, take the lids off and leave them. Go back once or twice a day and shake them really well. Some juices will only take a few days to a week. So all those flavors you've bought and don't like, don't throw them out! Go back to them after a week or so and try them again.
Good luck!