ironically enough, it's because it's Zigbee only that I don't have the Plus.
I'd gotten started with ADT Pulse, which is Z-wave only, then the Plus came out, which wouldn't work with my hardware.
Personally, I recommend people get a Samsung SmartThings or Wink or Wemo hub. They are top rated, and cover multiple protocols (including z-wave and zigbee).
This also sets you up so if the product you bought isn't supported anymore, you can switch and your stuff will still work. Or switch to Google Home, and again, your stuff will still work.
Additionally, these smart hubs are typically far more scriptable than the Plus, which only has Echo's limited Routines.