The only Windows all-in-one to match the high-end iMac in both screen size and resolution, the Dell XPS One 27 has just received a Windows 8 makeover. A touch screen and a new sliding base make this one of the best Windows PCs available.
Sony's new all-in-one -- or is it a tablet? -- is one of the most innovative Windows 8 launch PCs. A 20-inch all-in-one with a battery, the Vaio Tap 20 offers the mobility of a tablet (over a short range, anyway) and the large display of a proper desktop.