Hi Poe, you already got the best suggestion from Michael and Joanne. I
will talk about more specific teas from them-

www.teacentre.ca Bai Hao Oolong. This company has good Taiwanese tea

www.kyelateas.com small selection of Darjeeling. Namring upper and
Margaret's hope . I liked them.

www.capital tea.com I was happy with their Assam- Monahari Estate
Ripon
Vienna,VA