Case

Case quality between these notebooks are above average even for the Xiaomi. It's obvious that the Mi Air is taking more than just a few cues from Apple, but the final unibody aluminum base is thankfully of high quality and not a mere facade. Its notable weak points include the relatively fragile lid that is more susceptible to twisting when compared to both the Apple or Dell and an overall modest design.

The XPS 13 and its Infinity Edge chassis proves that you don't have to utilize a unibody design for a high-end experience. Its combination of aluminum for the lid and carbon fiber for the palm rests is very resistant to twists and depressions with no noticeable gaps between materials. Its narrow bezels, for example, are much more rigid despite the seemingly frail appearance.

As for size and weight, all three are mere millimeters apart in length and width and even closer in thickness at essentially 15 mm each. For those who like to keep track, however, the Dell system is indeed the overall smaller and lighter system of the three by the narrowest of margins.