I use the Dish Anywhere app on my phone to stream the sat channels to the car when we want to hear them.
Our Mirage is our "around town". When we travel long distances, where the sat radio really is nice, we normally take the other car that has it built into the car radio.
I got hooked on sat radio for trips while using it on rental cars during vacations. The car we bought for trips came with it on a free trial. Since the trial expired, I have called them every time my subscription is about to expire and have been offered a $5/month rate for a period of 5 months. I figure that is worth it to not have to mess with the phone in this car (especially for my wife, who doesn't like to mess with tech stuff).
No way I'd pay full subscription price for the amount I use the service, especially as I get it basically "free" from Dish.