I picked up a new house in October and the wife is letting me play.
I'm running a Wink 2 Hub (Z-wave/Zigbee), Amazon Echo & Dot, one Wink Relay (another one site to be installed), a Logitech Harmony hub w/ remote & smartphone app, a Vizio 70" 4k Smart TV (crappy yahoo apps [3 year old Woot Purchase]) w/ chromecast , a 43" 4k LG Smart TV (Web OS 3.0/black friday Fry's special), various switches from Plum lightpads (WiFI only, no android app, but IFTTT compatible), Lutron Decora dimmable smart switches, Lutron Decora smart plugs, ring doorbell, various door and window contacts sensors, garage door opener, Kiddie smart smoke/CO2 sensors and a rainmachine smart water meter all on Goggle Wifi 3 puck mesh network.
For those things that do not operate via the Echo/Wink setup, I automate thru IFTTT. For example, if I say 'Alexa trigger Netflix', alexa sends info to IFTTT to Logitech Hub to turn on the 70" TV and change the input to the smart app Netflix. On my phone, since Alexa for android does not have voice input, Ubi app sends voice commands from phone to Alexa for processing & execution.
Wink lets me setup various robots, or locak If/Then statements, which can be nested. If one of my motion sensor sense motion, turn on outside lights and start motion off program (wait 16 mintues and turn off lights). One current issue w/ Wink's setup, all motion sensors are seen as one sensor. So my front porch sensor and my back door sensor trigger the same actions currently.
I am still not covinced to have security/doors on the smart circuit yet, but I know how insecure a keyed lock is. My alarm systems a seperate smart system w/ its own sensors & motion setup.
My next add on will be Bali smart shade motor controllers, I already have the blinds, and a Roomba which I will name Kraken & make the Echo work on the command of "Release the Kraken" to clean up after my 18 mo old daughter after she finishes throwing her food around at dinner.