One expensive route I did find for a DIY SSD is this unit:

http://www.jpcentury.com/pro_con.aspx?id=P_00000025

It takes 3 CF cards and presents them as one drive. The company selling them appears to be moving away from IDE to newer SATA ones, so if this interests anyone else, you may want to track them down soon. Though from reports by others here, SATA to PATA adaptors seem to work well in the empeg.

Price is a bit high at ~$230 or so. But this may be worth it if someone is sitting on several higher capacity CF cards.