I've not used dockge so it may be great but at least for this case portainer puts all the stack (docker-compose) files on disk. It's very easy to grab them if the app is unavailable.
I use a single Portainer service to manage 5 servers, 3 local and 2 VPS. I didn't have to relearn anything beyond my management tool of choice (compose, swarm, k8s etc)