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To give Dell credit, its rotating-screen laptop/tablet hybrid keeps getting a bit better with each generation. The basic design, a screen with a center horizontal hinge that can flip 180 degrees and fold down to form a tablet, first came to us in the form of the Dell Inspiron Duo in 2010.
That system was an underpowered touch-screen Netbook (if you remember those) that worked ok as a cheap laptop, but made for a clunky, hard to use tablet (part of the blame went to Windows 7). The idea came back in an ultrabook that was renamed the XPS 12, and was one of the first Windows 8 hybrids, combining Microsoft's new tile-based OS with a touch screen, but the battery with such as dell Vostro 3350 battery, Dell 0XXDG0 Battery, Dell Latitude E4400 Battery, Dell HW905 Battery, Dell Latitude C400 Battery, Dell 00R271 Battery, Dell Latitude 2100 Battery, Dell C9880 Battery, Dell XPS M2010 Battery, Dell MN151 Battery, Dell Latitude D420 Battery, Dell Inspiron 1012 Batterylife didn't measure up for an on-the-go tablet, and the system often didn't seem to know how to adjust on the fly when its screen was being moved between positions.
The new XPS 12 is only slightly different than the previous edition, but the main change is an important one. Now featuring CPUs from Intel's recent fourth-generation Core i-series, the XPS 12 finally has battery life worthy of an ultrabook/tablet hybrid.
That the XPS 12 manages to run for over 7 hours and offer a movable screen while maintaining a slim, light, ultrabook body is to its credit. Our Intel Core i5 version, with a 128GB SSD, carries a bit of a price premium, at $1,199, but not outrageously so.
The screen and its accelerometer still get confused sometimes when I flip the display around to the back, and I even had a few instances where the display refused to wake up, requiring a hard reboot, but I continue to the think that the ability to point your screen out from the back of your laptop (the Lenovo Yoga, Acer R7, and other systems achieve the same end, although in different ways) is something many people will find frequently useful once they get used to it.
I'd be tempted to spend a little less and get an IdeaPad Yoga 13 from Lenovo, or even a 13-inch MacBook Air (a different animal, to be sure, but still a top ultrabook alternative), but Dell keeps making the XPS 12 a little better with each iteration.