As a daily fellow green tea drinker of many years, I must chime in with my recommendation for Ten Tea. They used to be knwon as Ten Ren Tea, but they dropped the "Ren" a couple of years ago for some reason or other. They have a super mail order and online operation. They website, as you might guess is http://tentea.com/.
I can recommend many of their offerings, with two particular favorites: They have some whole-leaf tea bags, one with only green tea and another with green tea and Osmanthus flower. Fantastic!
They have a great variety of products, from the average everyday teas in regular teabags [even their regular green tea is a treat every day!] to the more esoteric and expensive specialties.
AND, lucky for you, they have retail outlets near your location; they have a store finder on the website.