I have been using the visual studio code since 2016. The cool features that I like the most is the outline code and Emmet. It is very useful when I develop the complex application or large website. Other extensions that I often use, are below.
@ update on 3 May 2019
Mainly I work on PHP, SASS, LESS, javascript, CSS and HTML. Reactjs and Vuejs are fun to work with as well. What is your favorite extensions?