Overall, for MY needs, it serves its purpose. I do not have any options/modules added, such as TV/NAV/Bluetooth. Some things could be better. I think AM/FM radio reception is poor, compared to original car radio. Unit freezes up in one mode (radio, USB) , not allowing you to change modes or do much else. Must reset unit, which loses all settings. Doesn't happen frequently, but pain when it does happen (and it WILL happen). If you have the USB mini-plug plugged into radio, depending on where you placed your USB device, be aware before trying to insert or eject a CD or DVD. DVD playback and image is good, but this is my first mobile device so I have no comparative experience. I have no complaints with that aspect. For the price, I can't really complain so if your looking for function on a tight budget, it will probably suffice as it does for me. But if you have the money to spare, I suspect there are better units available.