Top PCs and Macs for holiday shoppers

Apple's latest Airs look the same, but have improved graphics and -- most importantly -- massively better battery life. Just for that huge battery boost alone, the Air remains an excellent go-to laptop.

Our favorite all-in-one touch-screen Windows 8 PC has a fantastic mix of performance, higher-than-1080p screen quality, and graphics, making for a nearly perfect package.

What can make this year's Lenovo Yoga even better than last year's? A 3,200x1,800-pixel, ultra-high-resolution display, an innovative keyboard that folds up its keys when in tablet mode, and newer Intel processors.

Keeping the same overall feel of Samsung's previous Series 9 slim laptop, the Book 9 Plus adds a higher-res touch screen and better overall performance in a really compact 13-inch body.

Apple's latest iMacs amount to some internal upgrades: newer Intel processors and Nvidia graphics. They make last year's already-excellent sleek all-in-one Mac just a little bit better.