Does Zigbee have the same issues that other smart bulbs do with loss of Internet connection, and voltage drops/brown outs/black outs?
They all turn on the full brightness for "safety"
4 AM my voltage drops from 120 to 110 - not even noticable to a human being, and every light in my home turns on. Happened with Hue more than a few times and I got rid of every single bulb. I ain't got sleep to lose.
High CRI is what you want. This is the number corresponding with ability see colors accurately.