I'm looking for some recommendations on a database for the Palm O/S. I have an attorney that is interested in a database where he can create customizeble fields. He would also like to search, sort and filter. He would also like to sync to a desktop database that can be accessed by his group.

I've been looking around and have found HandDbase, MobileDB and Hangman's Attorney's Book 1.0.0.

Does anyone have and input on these or any other types?