Recently bought my new car (02 Celica TSport if that matters) and it has what i believe to be a double-DIN sized headunit. Now i know i could get a fascia and pop my old MP3 headunit in, porssibly requiring an ISO adapter, but i'drather look at it as an oppurtunity to upgrade 
Saw some lovely Kenwood DVD Headunits with 7" Screens etc for about £800 but really £400 is nearer where i'd like to be (wouldnt rule out £700 or more for the perfect setup though)
Also, with these units that have screens, does the screen fold away and out of sight or does it just snap-off like normal headunits?
What do people reccomend for doubleDIN units? Any reccomendations? Any online shops which are useful?
My main requirements:
MP3 playback
Make use of the extra space available
couple of RCA outputs
TIA

Saw some lovely Kenwood DVD Headunits with 7" Screens etc for about £800 but really £400 is nearer where i'd like to be (wouldnt rule out £700 or more for the perfect setup though)
Also, with these units that have screens, does the screen fold away and out of sight or does it just snap-off like normal headunits?
What do people reccomend for doubleDIN units? Any reccomendations? Any online shops which are useful?
My main requirements:
MP3 playback
Make use of the extra space available
couple of RCA outputs
TIA