Just installed the X920BT in wife's car along with the Sirius satellite receiver & interconnect. Had planned to go Eclipse until they decided to exit the market.
Overall, the X920 is a great unit and voice control of nav & iPhone functions seems to work extremely well. But the Sirius radio interface is terrible and extremely crippled. Pre-Sets don't show any channel info at all as compared to the XM interface which is very robust with detailed information about the channel pre-set.
Very disappointed in the lack of information for pre-sets. You better have a very good memory to remember what you programmed in what pre-set. An e-mail to Pioneer with an inquiry as to plans to improve the interface was answered with an "I'm sorry, this is normal for the Sirius interface and there are no plans to update/improve the interface."
Clearly, the data is already there since you can scroll through the display button on the main Sirius page. Gee, at least let us config the buttons with the AVIC feed software and name them.
This is my first experience with these Pioneer units after months of research.