I will throw my .02 in here also. ST is a great alternative to IRIS but for us not very tech savvy people who just want things to work out of the box it’s just okay. I really liked the the app set up with IRIS, we live in Washington State and have a house in Arizona. Seeing the history first thing when opening the IRIS app and ease of checking both places was great......a little less convenient than ST and I personally hate the history of every little thing the hub does. Switched over to Arlo cams (which I really like but don’t see much difference than IRIS) viewing in ST sucks I use the Arlo app and that’s a little inconvenient. I had all version 1 door and window sensors and I thought they worked awesome......ST multi sensors use batteries quick so far and the door needs to be open about four inches for it to show open where IRIS could be 1/4 inch and show open (having dogs and kids makes this important to me). I do love the smart door app in ST for changing codes and history in the classic app.....which having to use two apps to accomplish different things suck also. All in all it does what I need though and hopefully as I adjust to it I learn to like it the way I did IRIS.