I'm looking for a wine store with a good selection of German Rieslings, especially from producers in Nahe (Dönnhoff, Schäfer-Fröhlich etc.). Trockenbeerenauslese would be great in particular, though Spätlese would probably be easier to find. I'd also be interested in getting amontillado sherry, and I wouldn't say no to a selection of moderately priced Burgundies.
Limitations: the store must be in Boston and accessible by the T. I don't have a car atm, so I will have to use public transit.
Thanks in advance.