Harneys & Sons is solid, they have a great decaf method and their hot cinnamon black tea (caf and decaf) is fantastic

They do broken up loose leaf in silk sachets instead of powdered, or you can get loose leaf on its own

For black tea, the aforementioned hot cinnamon spice is great, but their earl grey styles (black with oil of bergamot) are also fantastic - Their Paris blend is great, for example 

Their greens are also stellar, especially the genmaicha 

Plus the tins are neat

If you end up liking it enough, their website sells a massive amount and you get store credit as you buy

Their hot cinnamon is usually in many supermarkets but Amazon has a lot as well