TFA makes:
Earl Grey Tea
Earl Grey Tea II (no/low alcohol version)
Green Tea
Black Tea
Black Tea Deluxe ("Premium" version)
Chai Tea
Chai Tea II (no/low alcohol version)
Sweet Tea
(
all can be found here)
I have personally used the Earl Grey, Green, and Black (not the "Deluxe). The Earl was very good with a strong note of the bergamot essence. The Green was also very good; though it reminded me more of a basic "Lipton" type of tea vs. the lighter, more floral, "green" tea. But that could be because I was using too much. The Black (non-Deluxe) was just plain nasty and have read many posts of others who have had similar results (perhaps that is why they came out with the "deluxe" version... which I have yet to try).
These are synthetics so there is no worry about contaminants from botanical matter or micron filtration.