I still just use ES5 JS, jQuery for around 2/3rd of the frontend code I write. The remaining third is a split between simpler, more mature but decidedly unsexy

I still just use ES5 JS, jQuery for around 2/3rd of the frontend code I write. The remaining third is a split between simpler, more mature but decidedly unsexy frameworks like Backbone, Underscore, Handlebars and newer trendy babelifed React and Vue. Both are fine. I enjoy both still. Some people would consider it a bad thing that eg. Backbone hasnt had a major version in years but it is still perfectly capable for many use cases and it performs well. Of course you have to have more experience and knowledge with JS and frontend development in general to get these results I think.