99% might be a bit high. To see the station listings:
I live about 50 miles down I-81 from you, and my favorite station is KFRC in SF. As with Pandora, there is no screen saver. You don't need the TV if your IP radio station is already selected (or any other NET input).
If you are streaming IP data, there is no buffering. The "STOP" button will kill the streaming should you desire to use the internet with your router for something else. If there is an activity LED on your modem you will see what I mean.