Same here. Personally I prefer ES6 for a few reasons: - Future compatible, more interoperable - ES6 classes can extend each other in a standards compliant way

Same here. Personally I prefer ES6 for a few reasons: - Future compatible, more interoperable - ES6 classes can extend each other in a standards compliant way - CS arrow functions feel verbose compared to ES6 - Constants - More tooling support - More features - Upcoming features, like ES7 async/await have polyfills that you can use today (as opposed to CS - https://github.com/jashkenas/coffeescript/pull/3813 https://github.com/jashkenas/coffeescript/pull/3813) Though I do miss a couple of things: - The last expression in a block is implicitly returned (nice sugar for functional programming) - Ranges ([1..10])