Technical director of a LAMP stack creative agency here. This write-up almost exactly mirrors our experiences across Wordpress, Drupal and Craft. I think they've made an excellent choice.
If anyone from studio24 is reading this we've developed a Craft plugin for Varnish purging etc that we're using across multiple production deployments: https://github.com/Whitespacers/Citrus
If anyone from studio24 is reading this we've developed a Craft plugin for Varnish purging etc that we're using across multiple production deployments: https://github.com/Whitespacers/Citrus