I'm in Toronto. I have iSmart Alarm, but they are really not integrated with much of anything. I do some basic arm/disarm with HE via their IFTTT integration. There's an Alexa integration, and Echo Speaks might work with it for that.
However, if I were to do this again, I would look at either Scout or Ring. Google's offering is nice, but Google has a way of abandoning too much. Not the type of thing you want to see abandoned. At this point it's looking like I may have another soon to be door stop. iSmart Alarm has had a lot of deep discounts on product lately. 50% off on everything is the latest. Not a good sign.
I'm not into paid monitoring, but I can see the attraction to the one Costco is selling. You could potentially control that from Hubitat if you added Google Assistant Relay to your setup. With that, you can control anything that Google home can control, but silently and fully automated. It is all cloud based control though, so not the best option. I think that's where you're at with all of them though.
Perhaps the only local solution is what people have done with HubDuino or Konnected
Just suggesting that no matter which of those you choose, you're basically rolling the bones. The two that will probably be there long term are Scout and Ring because of the investment in them. Google would be the obvious third because of the amount of money ABC has, but they don't have a good track record with things that don't have an ad model.
