Well, my favorite tea company is my own Lee's Teas, although that miiiight be a bit biased... but all our teas do use certified organic and fair trade certified ingredients, teas and herbs at the peak of their potentcy, and we got our start nearly 10 years ago blending herbal teas for medicinal effect which is my true passion, so I know my herbal teas will always pack the punch I want :)
In a more unbiased light, I get my bulk teas, essential oils, and ingredients online from Mountain Rose Herbs because of their organic, fair trade, and eco-friendly qualities, and also their superior product quality. Frontier Organics has good quality and an eco-friendly bias, but their prices can be unreasonably high in some instances. I also use my local co-op and herb shops. I don't buy tea in grocery stores because your $2-$4 boxes of tea are usually bagged-up bottom-of-the-barrel shake, but as far as that goes, Yogi tea at least uses the proper herbs for the health benefits each tea promotes.
What kind of tea do you like to drink, freespiritdhippie? Happy to find a like-minded spirit here on HP.
Be well, Drink on! Cheers!