Yes, I've seen both Tfa and Fa (which last time I checked was on their bottles, but maybe they've changed it). Good to be reminded, thanks to
88ArDeN88, there's a small "a" in the "Fa" denotation of The Flavor Apprentice to differentiate it from FA (FlavourArts).
I agree that FA is superior. I like it better than anything I've tried, especially for certain flavors, basics like Espresso, Apple Pie, Strawberry, etc. My outdated opinion is that they are the best--a little more money, but you use far less. Also, not sure if this is a big deal to people, but all the vape flavors are acetoin/diacetyl free. That was really helpful to me when I was starting DIY.