In an independent comparison between the Nest Learning Thermostat and Honeywell smart thermostats (the Wi-Fi Smart Thermostat and the 7-Day Programmable Thermostat), the Nest model is best. The Nest offers excellent energy saving options and is well designed from both aesthetic and technological perspectives.
In a comparison of the installation process between the Honeywell and Nest thermostats, the Nest won. The Nest Learning Thermostat automatically searches for and syncs with the system it is connected to, while the Honeywell models require an extra wire not found in most homes just to make the installation. Aesthetically, the Honeywell models have a variety of background colors to choose from, while the Nest has a more modern or futuristic look.
The Nest model requires almost no programming, as it quickly learns its owners preferred temperatures and schedules and automatically programs itself. It also has the option to be programmed manually. The Honeywell 7-Day Programmable Thermostat has a programmable weekly schedule. Both Honeywell models also have the "Smart Response Technology," which maximizes energy efficiency.
The Nest model is both easy to program and easy to use. In fact, it does almost everything on its own once its been hooked up. The Honeywell models allow owners to program their preferences, then the Smart Response Technology does the rest. Both seem to be excellent choices, choosing one simply depends on personal preferences.