Ranked in these QuestionsQuestion Ranking
Pro Very optimized
Pro Accessibility in mind
Pro Made for Angular
Pro Multiple theme support
You can create your own themes using the SCSS toolkit.
Con Latest versions docs are incomplete
The previous version had nice docs. The new one has almost nothing. And the library has changed wildly so the old docs are no use.
Con Not that customizable
The use of the library can be very hard for beginners, but it gets very good when you know the features.