If a new notebook computer is on your shopping list, check our latest laptop Ratings (available to subscribers), where you'll find out everything you need to know about 35 models, including a great Sony system and the latest MacBooks.

That 13-inch Sony, the highest-rated Windows-based laptop in our Ratings, weighs only 3.3 pounds, yet has a battery life of 6¼ hours. Although it's pricey at $1,800, that's still the best ratio of battery life to weight we've seen. Battery life for other brands is getting better, too, we found. Eight of the new models, including at least one in every size category, lasted at least 5 hours on a charge.

The new MacBooks are available in 13.3- and 15.4-inch sizes. The larger one is tops in its class. If you're looking for a MacBook bargain, consider the classic White MacBook; Apple recently reduced its price to $1,000.

For help getting started, take a look at our Laptop Buying Guide, where you'll find advice on what size is best for you, what computer features are important, and more.

—Donna Tapellini