So far I've tried TW's Apple, Aroma's Watermelon and Coffee, and JC's Arctic Mint. I think I like Arctic Mint most because despite my love for flavors, I'm a menthol girl at heart. It also has a minty candy taste to it rather than a generic menthol taste. Though TW's Apple isn't bad, the flavoring didn't seem very strong to me to begin with and especially now that I've tried other brands. Aroma's Coffee is a nice strong and accurate flavor ideal for cutting, but I'm just not the biggest coffee fan in general. I'm not really sure why I tried it in the first place, lol. It's really hard to find anything that tastes like watermelon that actually isn't watermelon, but all the same Aroma's watermelon is a nice reminder of watermelon and very sweet.
Also the Arctic Mint mixes very well with the Watermelon and Coffee to give it an extra pop.
I see some places have a Dr. Pepper flavor too, my favorite drink. I think I'll try that next. Can anyone recommend a company?