I just purchased some Flavor Apprentice black tea, and mixed with it yesterday. I don't taste my mixes until they've steeped a fair amount of time, so I can't be of help yet (sorry) but it SMELLED very similar to black tea, and rather strong. I did a mix with jasmine tea and condensed milk, and I will be interested to see how it turns out. I hope it's not a mix that "fails out" on me, but I guess it will be a while before I find out. It did smell strong, and seemed to have hints of those "dark" or "sour" notes that earl grey has (full disclosure, to me the taste of earl grey is super similar to ear wax, I don't care for it) but it definitely had a "round" tea flavor.
Here's a link, since you did ask for one:
Flavor Apprentice Black Tea*
Caveat emptor-- although it smelled nice and flavorful, I really won't know how it performs until I vape it, other than smell, although I have developed SOME accuracy with that. It smells like it will develop a nice, strong tea flavor.
Anna