Look at the restrictions you can put on this one. Link follows.
http://www.amazon.com/gp/product/B008GGCAVM/
Page down to the FreeTime feature.
Bob
Does anyone have personal experience with either of these to let me know if I can restrict access to the internet? My kids want one but I would like to be able exercise some parental control.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic