I wouldn't pay for AT&T (Hawaii) - the slacker radio doesn't work well...
Glad its free now, but if I had to pay, I think I would want verizon.
How's everyone elses slacker radio performing?
I think Slacker has a problem that's not AT&T's fault. Another forum thread mentioned that Tesla is working with Slacker to fix recent problems. I hadn't noticed any problems until today. I use Verizon for my phone. With the Tesla software update I look forward to tethering the car through my 4G connection :-)