I realize that this is not in line with the PHP requirement, but hear me out:
I would use Ruby on Rails.
I have transitioned from using Drupal to Symfony2 (sometimes with Sonata) to using Ruby on Rails, and let me tell you, everything is indeed greener on this side. The tools are better, the language is easy to learn and it is mostly sane. The framework is amazeballs, I am not even kidding. Writing tests is actually fun. In general, I am a much happier developer with Ruby on Rails. I would also dare to say that RoR makes me a lot more efficient as well.
In Symfony I'd frequently get stuck in finding a workaround for some weird bug, which just doesn't happen that much anymore in Rails...