[Bill]

The Nintendo DS Lite is 42% smaller in volume and 21% lighter than the original Nintendo DS. The layout of the controls has been adjusted slightly, with the Start/Select buttons being moved below the ABXY buttons. The stylus slides horizontally into the right side of the system, and the microphone has been relocated to the hinge in the center of the system
http://en.wikipedia.org/wiki/Nintendo_DS_Lite

(and got a better screen too)

so I should get the lite one then?