Barnes & Noble Nook HD (starts at $199 for 8 gigabytes of storage)
Barnes & Noble has paid a lot of attention to the screens on its Nooks. This year, it's clearly outdone the competition, with a screen that packs the pixels tighter than any other small tablet. It's very sharp and colorful, approaching the look of the Retina screen that graces the full-size iPad. The other strength of the Nook HD is that it has a slot for a memory card, meaning that you can expand the storage space for movies and music by 32 gigabytes for $25. It's the only tablet in our roundup with this feature. The downside is that the Nook HD is less of a general-purpose tablet and more of a consumption device for books and movies. It doesn't have a camera, so it's no good for videoconferencing. The selection of apps is the smallest. There's also no option for cellular broadband. Still, the Nook is an excellent choice for avid readers, kids and others who won't be frustrated by the small selection of things like 3-D shoot-em-up games.