I own two types.

For basic plug-and-use, I own Helix DBS1000.

When I need better functionality, I use Spyder Robotics Herpstat Pro Bundles. What the Herpstat Pro allows you to do is amazing. I own 3, soon to be 4. If you have $350-400 to spend per thermostat get the Pro.

These are the only two types of heat control I use.