I'm considering buying a CX5 and have a question regarding Sirius and the joystick controller. Can you click on Sirius and then use the joystick to surf through Sirious channels one by one? (since you can't use the touchscreen when driving) Or does it only cycle through your pre-set channels? I have a 2018 Subaru Forester and when you click on Sirius, you would have to touch the screen to surf through the channels. You can't click on Sirius and use the steering wheel controls since they only operate your pre-set channels. Thanks for your input!