Terrific smaller tablets continue to march onto the mobile scene, and some are legitimate challengers to the dominant Apple iPad. Among them is the Google Nexus 7, which is a very good tablet at a great price.

The Nexus 7, $250, has 16GB of storage, a crisp 7-inch display, and a quad-core processor, and it runs Android 4.1. This latest version of the Android operating system incorporates several interesting features, including voice search and an improved notification bar.

With its bigger, excellent Retina display and a still-unmatched app store, the iPad still has the edge over the Nexus 7. But if you want a tablet in a smaller package for a lot less money, the Nexus 7 is worth thinking about. Get the details on its performance in our latest tablet computer Ratings.

Also new to the tablet Ratings is the Toshiba Excite 7.7, $500. A bit larger than the Google Nexus 7, it's still plenty portable.