After fooling around with the Sirius stuff on my D3, I wish that Pioneer could do the following in any updates to the software they may be working on:
Show the Sirius channel name in the preset button after you set it, rather than just "P1", "P2", etc.
Take out the DISP button, and just display all the song info in the text window on the left side of the screen. It is time consuming (and distracting) to have to scroll through the channel, artist, song title, composer, category, and station ID for each song.
Please add the option to use the MEMO button for artists, not just songs.