I now have several Aurelia apps in production. I've also created an app in Angular (v1), and another using Ionic (v1) - which was great. But, I can't express how well Rob and his team executed on this project. Documentation could be a little better in a couple areas but this is a place where they've done extremely well also (contradiction I know - but, for example the cheat sheets are amazing and documentation is complete on most things but there are some classes that are still not documented well enough). If you want to develop in Aurelia - just the community on Gitter - they are extremely responsive and very helpful.