DVD-Nav unit

Im looking to instal a dvd/gps unit in my 99 xj. I've searched but came up with nothing. Just looking for opinions and recomendations on what you guys are running.

Cheers.

Spend 1/5 as much for just a standalone Garmin. Otherwise you'll wish you did when either a) someone breaks in to steal the fancy $800 GPS head unit, or b) the maps are out of date and you can't upgrade them or must spend hundreds for new data.