does VGA mean anything to you ?
if it does then LinITX / Xenarc / Lilliputt are the ones to go for, if you just want composite in then get the Pioneer stuff - typically a TV or composite display (even Pioneer indash DVD) is only 640x480, quite poor compared to a lili / Xenarc / LinITX
VGA displays pc characters / letters etc 500 X better than a composite screen
Thats the big difference
Again, define what you need and / or want and then choose a screen from there