Just installed the Soundgate I got from Wingstuff on my 2008 and I love it. Nice to skip through songs an playlists from your fingertips. I still also have control of the iPod from the iPod as well. Too bad I didn't have satelite radio because I believe the screen controls are much nicer for such. Well worth the money except now I have to buy a newer iPod with a larger capacity.
Oh...it also saved me yesterday from a very embarassing moment. I was riding with a group of macho men stuck in city traffic when a 'sappy' song from my playlist came on. In a split second, I deftly skipped to the next song and nobody noticed. When we were back on the road, I switched back to the same sappy song to sing along. Now if I can just remember to delete that song from my Goldwinger playlist.