Just when you thought it was safe to shop for a new laptop, a fresh problem stands in the way of laptop buyers: confusion. The shelves are now filled with shiny new PCs and Macs running revamped operating systems, but it's suddenly more complicated to choose a new laptop, especially for Windows shoppers.

So, for this year's fall laptop buyer's guide, I'll focus on sorting out some of the muddle. As always, this guide is for consumers doing the most common tasks. It isn't meant for corporate buyers or for hard-core gamers or serious media producers.

There always have been some core differences among the many Windows laptops and Apple's MacBook Air and MacBook Pro laptops. Computer makers using Windows tended to offer much greater variety and lower prices, while Mac models had better software, were much less prone to viruses and were generally more reliable and elegant.

Now, with the release of the new Windows 8 operating system, there is an even more fundamental difference. MacBooks remain traditional laptops, controlled by touch pads and keyboards. Apple has kept the Mac separate from its touch-screen computer, the market-dominating iPad tablet.

But Windows 8 laptops combine the two approaches, with two different user environments in the same computer. One is the traditional Windows desktop mode, best used with a touch pad or mouse and a keyboard. The other is the Start Screen mode, which operates like a tablet, has tablet-like apps and is best used with a touch screen.

So, if you're looking for a familiar laptop, focus on a Mac. If you like the idea of both approaches in one device, and can handle switching back and forth, pick a Windows 8 laptop.