Consumer Electronics

Even the most expensive digital TV can't convey the rich multichannel sound you'll find on most Blu-ray and DVD movies and high-definition television programs. There are two basic ways to upgrade the audio: Choose a home-theater-in-a-box system or build your own surround-sound system from separate components. (Last updated May 2, 2011.)

Lightweight and highly portable, tablet computers are made to be carried wherever you go. They're multifunctional, serving as Web browser, e-book reader, digital picture viewer, movie viewer, and music player. All we tested have a webcam, and most have a 7- to 10-inch screen and weigh from just under a pound to about 1.5 pounds.

Portable GPS navigation systems can guide you through unfamiliar areas, suggest an alternative route around rush hour traffic, and perform an increasing array of infotainment functions. Our buyers guide will help you choose the right GPS device for your budget and needs.

In an era when online scammers are targeting your credit-card information, Social Security number, and other personal data, it's just as important not to be lax with your paper documents. That's where a paper shredder can help. Find out which models we tested made the cut.

Whether you want a slim LCD or plasma TV, a 3D-capable set, or a front projector that can give you a cinema-like experience at home, you'll find the help you need here. (Last updated June 2011.)