An ELK stack is definitely a lot easier and straight forward to setup. Since we need to support a dozen or so teams with varying performance considerations we found that logstash left a lot to be desired. In the end fluentd performed well and gave us a lot of flexibility.
I'd like your view from the trenches regarding Logstash vs Fluentd, specifically why it's better for 12+ teams? I'm having to make a similar decision myself and would enjoy your insight! Thanks