I've read that in order for the AVIC-D2 to display graphical data for XM you need to use the GEX-P10XMT module. Apparently the cheaper GEX-P920XM is not capable of displaying graphics on the receiver. Can anyone confirm this?

incorrect. the standalone XM tuner displays the XM graphics.

I'm just curious if the Sirius tuner does the same?

Thanks, So by stand-alone unit you are referring to the $100 GEX-920XM module. From what I heard the Sirius reciever has pretty bland graphics, if any at all. Of course i've been wrong before

The sirius doesn't have any graphics except the little sirius dog in the corner of the screen. It is one line of scrolling text at the top of the screen and the presets will only say Preset 1, Preset 2, etc.