Which brand did you use? I just had a talk with someone venturing into black/breakfast teas.

Twinings < Bigelow < Tazo < Harney & Sons < Harney & Sons Historic Royal

If you wanna get absolutely legit good but expensive go Fortnum & Mason. But just getting some loose leaf online will blow away anything bagged in the stores. I got some bags of loose tea from a site called the tea spot and their stuff is damn good.