Probably depends on what you need the thermostat for. A home has a very different set of requirements than say the Burj Khalifa. And a warehouse or apartment

Probably depends on what you need the thermostat for. A home has a very different set of requirements than say the Burj Khalifa. And a warehouse or apartment complex might have their own very specialized requirements. That said Honeywell has products that cover most of those bases at least acceptably. If you just want something for your house though EcoBee seems to be the device to get.