Pretty straightforward, curious of folk's opinions. Right now I've got a mix of ThirdReality ones (Zwave), Zooz (Zwave), and SmartThings 2014 ones (Zigbee). The circular Zooz ones seem to break the most often, but the square ones are flawless. ThirdReality work great but their detection angle seems to be a bit poor.
What's your favorite? Why?