It depends a lot on what you can do. As @OldSurferDude wrote, if you want a cheap solution, this is the way to go. Also when you need something that is not available on the market. Here below the list of my camper nodes.
IMO mySensors is the best possible alternative, if not the only one, to the systems that rely on standards, which require way too many resources for the job they are asked.
In my case, several nodes have edge capabilities, because they have to keep working even if the controller is not responsive.
