You can MRV (transfer) shows between DTivos if they are hacked (and zipper will do this for you). "So that one is done and from what I have read i cant transfer again." I'm not sure what you mean by this statement. You would transfer through a network adapter that plugs into the USB port. Each tivo shows up on the NPL of the other. As for speed, I can transfer an hour show from one tivo to another in about 5-10 minutes (give or take on what is going on on my network). I love it not being limited to watching a show I recorded upstairs up there.
My views represent only what the voices in my head tell me.
Now if I could just chew through these restraints...