The DVD-enabled navigator, none of them good.
The DVD-enabled navigation devices are obsolete products and will soon be phased out. Its DVD function is not useful at all, and the failure rate is high, accounting for volume.
Modern navigators do not have DVDS, but play video, audio, e-books and more through USB or SD ports. Copying a USB flash drive is N times easier than burning a CD, and the capacity of a USB flash drive is many times larger than a CD, right?