geez, looks like an old kenwood or clarion to me, 6 inch screen with knob on the side. current dvd players have full 7inch with touchscreen and maybe some tiny buttons at the bottom.

if u need navigation go for kenwood, they have an add on garmin gps receiver but will cost u 5k++.
alpine with navigation will also end up at 5k++ category.

if u dont need navigation, dvd players start around 2-3k, u can get panasonic, jvc, clarion and kenwood. 3-4k u will get the higher end units from jvc, kenwood, pioneer and alpine.