Regular black tea is great. I would be a tea purist if there was really anywhere locally that sold the leaves. It's great for milk tea if you're into that.
At work they have Bromley. We don't have a stove or teapot unless you work in therapy, so I have to resort to using the microwave. I learned not to leave the bag in, buuuut it took me three tries. It kept exploding. Apparently though, studies show that microwaving tea on a certain power for a certain time brings out both the flavor and antioxidants best.
Also, specialty teas like ginger, mint, peppermint, etc can be very good for treating certain ailments/symptoms, so I always have those on hand. Honey is also a great additive if you're feeling ill.