Amazon has announced five new tablets, including an updated Kindle Fire for $159, a new e-reader called the Paperwhite for $119, and three models of the new Kindle Fire HD, all garnering widespread positive press reviews so far.

The Kindle Fire HD models feature slimmed down designs, improved displays, more powerful processors, and dual stereo speakers with Dolby Digital Plus optimization.

Their unique software features include “X-Ray,” which lets you easily pull up contextual information about books and movies, and “FreeTime,” which allows parents to set time and content restrictions for kids.

Kindle Paperwhite features a higher-resolution, frontlit e-reader with a soft ambient light and super-sharp text. The key innovation, the “frontlight,” turns the gray screen whiter.

Sources: ComputerWorld, PC Magazine, Washington Post.