I really love Docker Swarm, way way way simpler and easier to work with. So far having a 3 manager with 6 workers works flawlessly with not a single issue.

I've started with 1 Manager/Worker only and grow from there to 3 managers/workers and later kept the 3 managers and added worker nodes to the cluster.

It made me get into Docker even though for whatever reason I hate anything Docker related.