Palm to FreeBSD using ssh

On occasion I need to make an ssh connection to my FreeBSD machine  
(OpenSSH).

I have been using pssh (http://sealiesoftware.com/pssh/) but it goes  
out of its way to say that it is "probably" not secure.  I have tried  
(today) TuSSH (http://www.tussh.com/) which seems more secure but I  
don't know if it IS more secure of if it just isn't as verbose about  
not being secure.

They both appear to have support for keys, but TuSSH FAQ says:

    Q) When I go to "Import Private Key", I see my memo, entitled  
"Private Key", in the list.
    When I select it, then click the "Import" button, the Palm  
performs a soft reset or crashes.

    A) TuSSH doesn't support encrypted keys yet

I don't know what TuSSH *does* really support (normally I login with  
the id_dsa, but trying to import id_dsa.pub into TuSSH didn't work.


So I copied my 'id_dsa' to my Treo, and imported it into pssh.

I can now connect to the FreeBSD machine using my Private Key and  
Passphrase.

What I am trying to figure out is whether I should use TuSSH without  
the Private Key or pssh with the Private Key.  Which is more secure?   
Or is the answer "neither"?

TjL