I've been trying some flavored black teas lately. The quality's kind of all over the place, so I decided to try making tea with flavored water and decent black tea. Yesterday, I used some passionfruit-flavored, non-carbonated water that I got at ALDI (basically knock-off
Hint). Today, I used some raspberry seltzer.
The short of it is that it's quite a bit better than the pre-flavored teas, but if I were to do it regularly, it would be more expensive than just buying really good tea.