You infer that ZWave is not reliable, so that about leaves Insteon.
It is reliable, and today Zigbee, X10 and Insteon are also reliable for me.
Personally do not like wireless (or battery operated wireless) or cloud dependencies for my automation; that is me.
I do though play with it (wireless and cloud based automation). Similarly I use Microsoft SAPI for text to speech on a variety of voice fonts (a collection because I am addicted to it). I have MS SAPI today that talks to the Amazon Alexa plus playing around with the Amazon Echo. Will probably be tinkering with Cortana and Google Voice soon.
The above noted you can automate with Zigbee, Z-Wave, X-10, Insteon, UPB all at once and check out what your preferences are relating to ease of use and management of said mentioned protocols. I have done this relating to my light switches starting with X10, then Insteon and now UPB.
Include Radio RA in your tinkering. Best automation will be what fits for you when you test with software and firmware or both.
Here have Z-Wave, Zigbee, UPB and X10 controllers connected to my Leviton Omni Pro 2 panel. Software is doing similar (x10, Z-Wave, UPB and Zigbee will be included shortly) and compliments the Leviton OmniPro panel plus it does more automation stuff.
With the sheetrock off build a base infrastructure that will work for you. Electric is electric. Make the electric automation friendly. The automated (no matter what protocol it is using) light switch controls an LV load. Today's switches are LED friendly. High voltage topology is not wireless yet. Here had conduit and just about every in wall box had a load, neutral, switch or traveler wires. I added more electrical / breakers to get a bit more granular with the electric.