I just got started a month ago, and I'm still going through all my flavors and making single flavor recipes just to get a sense of what each one tastes like by itself, and what percentage is best for each. I have a spreadsheet where I am making notes on each one. I have tried 3 Capella flavors so far. Since the usual recommendation is 10-20%, I make a 10% and a 20%, vape a clearomizer of each, then mix them together to see what 15% is like.
So far I have tried: (70/30 pg/vg @ 18mg/ml nic)
Chocolate Fudge Brownie:
10% - Very weak. A little alcohol smell, taste.
15% - OK taste, no alcohol detected
20% - No flavor, stings throat
Sweet Cucumber:
All three % could not taste much of a difference, they just got slightly stronger at each %, but LOVED it. A nice light clean fresh taste all by itself that I think will also make a nice mixer for lots of things later that need some freshening or brightening up.
Sweet Tangerine:
I did not do the 3 different %'s on this, since all over the boards everyone raves about it a 15%. I made it last night, and YUCK - bitter taste like a children's aspirin. Added a couple drops of Smooth and it's better so I will finish the 5ml I made, but will go back to my method of two percentages trying it at 5% and 10% and then combining for a 7.5%