For a devOps fan like me, k8s has been a godsend, and what I like in particular is their 3 month release schedule. There are still some hiccups like no good documentation (or a tutorial really) on setting up shared writeable storage and how to handle databases, or more importantly replication.
The k8s team is very responsive and I'm sure these will be ironed out in the near future so we can all adore each other's cattle :)
> no tutorial
Your wish is my command! https://kubernetesbootcamp.github.io/kubernetes-bootcamp/
There's also Kelsey Hightower's "Kubernetes the Hard Way" https://github.com/kelseyhightower/kubernetes-the-hard-way