While sales of desktop computers are falling, there does seem to be one bright spot in the computer industry - mini-laptops or netbooks.

If you're looking to go online while you're on the go you might want to consider one.

Weighing in at just two to three pounds with up to 10-inch screens, they are much smaller than conventional laptops, and sales are expected to quadruple in the next four years.

But even though they're some of the cheapest laptops out there, Consumer Reports warns that you may sacrifice features for the low price.

"They're typically slower and have less memory, which makes them fine for light office work but not for gaming," says Dean Gallea. "And they're Wi-Fi ready, which makes them well equipped for people who want to go online or check their e-mail while they're out."

Consumer Reports tested the least expensive Windows netbooks on the market, and found several good choices priced around $400.

"When you're shopping for a net book, there are several features you should consider, including ergonomics, or how easy it is to use," says Gallea.

For one, take a look at the keyboard. They're smaller than typical laptops and can feel cramped.

Next, try out the track pad and see how easy it is to press the buttons. While some have big track pads, Consumer Reports tests showed you need over a pound of pressure to push the pad buttons. It should be less than half that.

Finally, compare battery life. Some can run for more than six hours, while others last less than two-and-a-half.

"The beauty of a net book is its small size," says Gallea. "You can fit it in a carry-on or even a large handbag. So as long as you know you're giving up a few things in exchange for portability, you probably won't be disappointed."

One of the things you give up is a DVD drive or burner because netbooks are too small for them.

If that's something you want, you have to go to a bigger computer. The good news is you can get one for about the same price.

So which net books have the most to offer?

Testers liked the Lenovo Idea Pad S10 with 10-inch screen. It has an impressive set of features, including an express card slot, 504 megabytes of ram and 80 gigabyte hard drive and Norton Protection Centre.

Acer Aspire One has double the memory, a long battery life and includes Microsoft Works -- but has a quirky track pad and shallow wrist rest.

Other net books that Consumer Reports thought highly of include one by Asus -- which has a five hour battery -- and the MSI Wind, which has a large 10-inch screen and superior key board but has a short battery life for less than two and a half hours.

With a report from CTV British Columbia's Chris Olsen