Fusion Teas -- on-line -- has excellent teas. My favorite is Roasted Pumpkin Mate.
I was on a diet a few years ago where I had no caffeine/no sugar/no alcohol/no gluten/and a few more no's. (It is supposed to reset your system, and yes, I felt great and lost 13 pounds....)
Before this, I loved coffee. After a 2 month break, coffee smells wonderful but I just don't like the taste. So I became a permanent tea drinker and love my morning pot.
It has to be loose tea, in a pot.