I am using a dual cf to ide adapter from Addonics, with two 4GB cards from Transcend, they are 133x speed cards. PCUniverse.com part number TS4GCF133 at $22.40 each.
Interestingly enough only one of them is recognized, and only if both are plugged into the adapter. The EFIKA does not like the dual adapter when one of the CF cards is missing, and if there's a way to get the hd tools to see unit 1 on the ide bus, I can't figure out it.