No real need to change from liking alpine and taking another brand just to get Sirius. Alpine and Pioneer are both discussing the chance of not being just XM ready. Their radios in the future might be and say Satellite Radio Ready instead of XM or Sirius. I am an XM fan and being a MECP 1st Class Installer on top of that it will remain my choice for SR service. I read and hear from my customers about too many issues with reception or other related problems with Sirius. Their products are also way behind on the technology scale compared to XM. For a company whose reps come into my store and talk alot of trash about XM I let the reviews done by industry professionals on sound quality, reception, and also the number of subscribers and stock prices make my decision. Its a clear one. XM all the way. Check out XM411.com and look at the new Roady2 walkman unit that your Roady2 will dock into. It is nice. BTW in mention to the prices listed for hardware to add it to SR ready aftermarket decks the prices are little off. For $100 you can add XM with tuner, ant, and adapter to most sony, pioneer, alpine, and yes even kenwood with the new universal tuner by Terk. The new Sirius ded. unit is also out for 90 and that is tuner and antenna all in the box ready to go.