The iPod interface is awesome. In fact, I don't see myself using the internal hard drive much for music--unless it's a rare case of someone else buying a cd and not letting me borrow it. But yeah...as you can see from the pics, it displays all the track info on the screen, and the sound quality is on point (makes you really notice the lossy compression that XM uses). The only drawback to the interface is the scrolling; There really isn't "scrolling," only "page down-ing." And the refresh rate is a *little* slower than I'd like, so if you start searching by artist, and you have a thousand artists on your 60GB iPod, and you want to get to Nancy Reagan's rendition of The National Anthem, it may take a while. But I realize now that good iPod playlist management is required for in-car iPod use. Once I get my playlists organized, I suspect my complaints will diminish.

So yeah, big for the iPod interface. I hadn't used the 1st gen adapter, but from what I hear, this is a much better release.

Note: I do not listen to music by Nancy Reagan. Nor do I have any Nancy Reagan music on my iPod. In fact, in all likelyhood, Nancy Reagan has never recorded music. It was just an example. I swear.