Whatever you do stick with the Prius head unit rado and get a Priusxm or Siriusprius unit to integrate into the Prius system. In spite of the install procedure, which is time consuming and requires that you disassamble the dash, the outcome is a nicely integrated XM or Sirius system with plenty of memories and touch screen control.

It has been said:
Hybrid drivers come in 3 flavors, greenie, techie and cheapie. Pick any 2.
2005 Prius, Melinium Silver over gray, package 5 (AI)