I saw somewhere in this thread that Blue Cola is less sweet than Red..
I have the HS Blue Cola, and Red Cola, and also TFA Cola, and FA Cola.
I'll be working my way through testing each one, until I find the best one (for my taste buds)
I seem to have a lot of other duplicate flavors from different company's that I need to do the same with.
What's disappointing is that, of the flavors I REALLY want, I can't find a good one, or one I can taste is how I need to say it....stupid taste buds

That includes coconut (tried 7 different ones), cheesecake (no flavor from 3 different kinds), a good chocolate (VZ has some with promise), etc etc, and blueberry .. until I found FA Bilberry
I had to go through 8 different caramels before I finally found one that I could taste, and it's yummy.
I have to tell you that I smoked for 56 years, and my taste buds are shot, so take this with a grain of salt
The HS flavors that I put on the "keeper" list so far are: (I've only tested 11 of the 29 I have)
Aniseed .. I don't care too much for licorice, but I do enjoy this flavor, ..it's a real refreshing break from all the others.
Cappuccino .. it's a good vape, but it's NOT cappuccino
Juicy Peach .. a nice "true peach" flavor
Mango .. good good good
Mojito .. good stuff, and another nice flavor for a change of taste
What I didn't care for, or just plain couldn't taste:
Caramel Macchiato
Cheesecake (nice, but NO cheesecake flavor to me)
Chocolate Cream .. ditto
Red Cola .. you heard that story

Strawberry .. there's much better in my arsenal.
These opinions are mine, and mine only .. other's may swear by them
Tobaccos:
I have Arabic, Desert Ship, Flue Cured, Gold & Silver, Golden V1, Highway, Indian, RY4, and Tab Blended
I like them all, and 4 of them are on my YUMMY rated list as vaping just plain solo.
That's about the extent of my HS contribution, until I work my way through the rest of their flavorings