I fully recommend the kindle fire hd. Since your primary market is a child, it seems only fit that you can have control over what content he uses and what access he can have. The kindle fire hd is a 7" tablet that has multiple parental control settings. you can choose to allow him to play only games, or you can choose to only allow him to read ebooks, or you can choose to restrict internet access completely, limit to only certain sites, etc. It also has a set up for multiple profiles, so more than one person can use it. Each profile will have their own log in, favorite apps, and settings. It is not an android tablet, but many apps can be downloaded through the amazon store (angry birds, cut the rope, where's my water, etc.) As well as sideloaded. Not to mention it has a decent price starting at $199.
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