Hi--
SpaceCowboy is right that we get the lower-quality teas in the Asian food stores in the US.
I ordered "shincha" from several dealers in Japan recently, and I have to say that o-cha.com is the one that impressed me with their high- quality offerings for quite reasonable prices. I also order from Itoen, but it's always matcha I get from them, and I order from them 'cuz I can get it fast (from New York City), and they have a grade that I like (koi-cha-yoo; for "thick tea"). Hibiki-an.com was another place I ordered shincha from... I ordered their top of the line shincha from the Uji district. The leaves were beautiful, shiny, dark dark green needles with no powder, no dust-- but flavorwise, it was probably no better than stuff $10 cheaper.
Derek mentioned "sencha," then followed that with "shincha," then compared them with first-flust teas? Shincha is a subcategory of sencha, and *is* first-flush. Some districts call this "hachiju-hachi- ya," meaning "88 nights" (meaning it was picked 89 days after some particular season-marking day. Shincha has a distinctive flavor. It becomes available in May, and many places sell out of it rather quickly. It blends well-- I mix it with other sencha, but the distinctive shincha taste is still obvious.
There are high-grade Japanese teas made with a special process and called "Fuka-mushi-cha" (deep steamed tea). Shizuoka is the district that developed this process, but a lot of other districts use it now as well. It produces a leaf that is broken and powdery. The leaves infuse very quickly, and produce a cup that is approaching opaque... the drink's texture is distinct. I drink this a lot, though I highten the amazing opaque color by adding a scoop of matcha to the leaf (a trick often used when serving cheaper tea, but does nice things to rather good tea as well ;) )
The web-site Melinda gave us lists lots of teas, and the *name* of the particular grade of tea she got was probably written only in Japanese on the package-- I wonder if what she has described might have been Fuka-mushi-cha.
james-henry holland hobart and william smith colleges geneva, new york