In my opinion, xm is is really not worth the hassle of having to buy all those extra parts and paying a monthly fee. I ended up trying it out because my hybrid came with the navi so i didn't have to buy the extra parts. But anyways, I find myself listening to the same 4 or 5 stations constantly all of which have pretty bad DJs. I find myself using my ipod alot more often. I hear sirius might have better music but like someone mentioned before, its not a factory option. On the plus side, if you have navi, it does display the artist and track name (don't know about non-navi). Unless you really have money to spend then fine, but if you wanna listen to good music just plug in your ipod and set it on shuffle or something.