Next week I'm escorting four college students to a conference at the Roosevelt. We'll be staying at the Waldorf and I'm looking for fun, convenient, delicious, inexpensive place to take them for dinner on a Weds. night. They are San Francisco omnivores, can probably spend around $25 (no booze) apiece for dinner. For convenience sake, I'd like to keep to the East Side, but I'm happy to haul them downtown.