Definitely check out SFBAAPS if you guys haven't been to one. Lots of plants can be had here, including java moss and riccia (someone is definitely bringing both java moss and erect moss and I'm sure there are others as well).
This next one will be in San Francisco and includes visits to two different LFS there (Ocean and Aqua Forest). FYI, Aqua Forest is the new one and George has offered to show us around after hours.
Link to the society: