I purchased this unit to move from XM to Sirius. I thought that it was a snap to install and much easier than the Trex unit I had previously with XM. The new features added from the SIR-PNR1 are great. You can get sports notifications even when you are on a different channel! Great way to get Sirius on your Pioneer head-unit. I gave it a 4 on durability because the first one I purchased was broken.
