Where with the SSB you can pick up the mike and ask if anybody is listening, I think that would be rather hard to do with a sat phone. Apart from that there are other advantages to SSB, but if they justify the cost of installation I think is a personal decision depending a lot on the cruising area and length of absence from more normal sources of communication.
Ah, and Jody - I don't think so.
Your pleasure is my business !!!