For me it was a few things:<p><pre><code>  1. Small size (easy to carry around)
  2. Keyboard that&#x27;s even smaller, super light, and optional (easy to carry around)
  3. Fantastic pen (better usability)
  4. Full OS Capability (better usability)
</code></pre>
So, they focused on portability and usability, and did really well with both.  And when compared with Apple tablets, they have better non-trivial usability, and when compared with Apple laptops, they have better portability.