I have been using the Apple Macbook Air(2016) model since the last 7 months & its been quite a surprise package to be honest. Lets talk about performance, this machine comes with a 1.8Ghz i5 processor clocked at 1.8 Ghz with 8GB RAM & zips through daily tasks like web-browsing, YouTube(Full HD), photoshop(light) & other basic task with ease to say the least.
I have actually edited a 4K video of 20 secs without any color grading & it did shows signs of stress, but it never crashed even once.
Build Quality: Excellent as what is expected from Apple. The unibody design is simply amazing with absolutely no light leakage from any part of the screen.
Keyboard: The Macbook Air uses the traditional Apple keyboard, unlike the Butterfly mechanism 2 found on the latest generation Macbook, but the travel of the keyboard is amazing to say the least with very well lit backlight keyaboard
Cons- The machine has aged a bit and shows it during demanding PRO apps like Adobe Premiere CC, Final Cut Pro X, Da Vinci resolve and the likes. So if you are looking for your workflow, then its better to go in for the Macbook with touchBar model at the least.