D.N.
I think I would get the DS. The DSI has the camera and just more detailed stuff over the DS. He may not be ready for that until he is 10 or so. The difference in price can be used to buy another game. And like already mentioned, get the armor. My husband bought my ids used DSs and they are ll broken--even broke mine--because were not careful where they put them. Really wish I had gotten the armor for it. Extra pens are also a good idea so if you can get a kit with all the accessories, it is worth it.