We tried the latest Vue 2.0 (https://github.com/vuejs/vue/tree/next) and Mithril 1.0 (https://github.com/lhorie/mithril.js) betas and we had some great results from both. We also tried Preact but we had issues with some SVG namespaces not properly being rendered so we gave up. Vue and Mithril enabled us to finally use our example app on our legacy Android testing devices. The experience with Cycle and Angular 2 was about the same as React (unusable) and the latest Ember was better but the initial page load times were still terrible.

We thought we found our library (Vue 2) until someone found a benchmark recently that showed that there was a library out there like Preact and React called Inferno. I highly recommend reading their readme (https://github.com/trueadm/inferno). It makes sense. We ran all our benchmarks and it not only came up quite a bit faster than both Vue 2 and Mithril 1.0, it also had a much more modular breakdown that allowed us to use our own state and router library without being tied to a framework – which was a massive win for the team. I have to say though, the amount of choices out there is insane. We're just lucky we found the right library for us and our needs. We highly recommend checking out Vue 2 though for ex-Angular codebases (which some of our team came from).

I hope this helped!