The Geek Factor: The Rio has much to recommend it to geeks. It comes standard with a backup camera that displays on the dash with a guide to help you determine distance to objects, which greatly helped ease my mind when in reverse as the back of the car is high enough it’s hard to directly view anything below about four feet above the road surface. The stereo, at least in the model I tried, came with Sirius XM radio and HD radio included, and had a “jukebox” that could store MP3s for playback without a mobile device. If you, like me, never go anywhere without your iPhone (or similar device), you’ll love the Rio’s features, as it not only has a USB port that can charge your device and/or, if it’s compatible, allow you to browse your music library and play any track you like from the dashboard touchscreen.