This is an old thread so I'm sure you already tried some of the flavors, but I recently got the cappuccino nobacco juice (12 mg) and it's pretty good. I do not like sweet flavors, like chocolate anything, so the mocha etc. flavors don't interest me, but if you're going for a strong coffee with a sweet undertone from the milk flavors in the drink, I recommend it.
I have tried the wow espresso carts and they were good, but the TH was a little too strong for me, even at 11 mg. The coffee is good, but it doesn't have a cream/sugar flavor, but it is a little sweet... it almost reminds me of syrup. Very breakfasty ;)
I think I found what you need. I myself once the caramel mocha frappe and thinks it tastes like the real thing however out of 4 other coworkers they all it just tastes like a really good cup of coffee. One of which drinks coffee like is going or our style. Vaping this flavor at 5.5 volts makes me not even care about drinking the real thing.