I just ordered a black box systems from Prospec.
Prospec Electronics Online Store
I havn't recieved it yet so no word on ease of installation and functionality, but it looks like a nice system.
Wired remote in the cockpit, black box will be mounted in the cabin out of the way (and dry!). Comes with an i-pod connection as well as Sirius ready.
I like that the remote (wired so no need for direct line of sight) displays & controles the ipod/sirius functions.
FYI, I'm relacing an 8 year old cd player from this company that still works. Just upgrading to a unit w/ ipod/sirius controls. I no longer have any need for cd's on the boat