Recently we worked with WP Engine. It is really cool, we created staging server easily. We had a issue with HTTPS but it was okay. After completion, everything was pushed to production server with one click. It was very easy otherwise we have to take database back up , import, do the change and export again etc. Wp engine saved our time.We are going to recommend it for big complex WordPress business owners. If you also want to go ahead with Wp engine, do drop us a email and we will take care of it.