The screen is nice and big and with the GeForce 8800 it even handles most games.
older games. Which is fine if you already have the games. I'm guessing that a soon to be kindergartner doesn't really have a large library of (age appropriate) software. The older macs do have dvdrom drives, so I suppose the used market is open.
A mac that can access most of the content on the app store would be helpful.