Sucky tea: Subway (they can't brew it right!!), most fast food joints (Wendy's), Nestea flavored or sweet tea or raspberry from the soda tap- ew!
My favorite tea to drink at home is loose leaf tea- I loved the Bodum store when it was open on Knox/Henderson. It was delicious! For the best bagged tea, I like Harney & Sons http://www.harney.com/. You can find it at Williams Sonoma & Macy's.--probably Central Market too.