Budget, Wi-Fi-only models arrive

The most convenient readers for receiving new content are those with free unlimited access to a 3G wireless data network and a Wi-Fi connection. But you can now save $50 or so by choosing versions of some readers, including the Kindle and Nook, that have only the Wi-Fi connection. Wi-Fi should suffice for everyone except bookworms who want the unlimited access to new books that's provided by full 3G access. Think twice about readers, including most models from Sony, that lack any wireless connectivity. Such models require a USB connection or use of a memory card to load new content, which is a significant inconvenience. (A new line of Sony e-book readers, all with touch, e-ink screens, started to hit stores as we finished this issue; we'll report on them in the future.)