Slacker Radio for the iPhone is better than Sirius

I stopped my Sirius satellite radio service and have signed up for the full version of Slacker Radio. It's MUCH cheaper ($4 versus $12), and the audio quality is BETTER, and the fact that I have unlimited skips means I'm not stuck to the playlist on the 5 or 6 sirius music stations that reflect my eclectic taste in music. Now if only I could control Slacker via a remote on my steering wheel....it would be perfect.