I have something similar -- furnace/ac system and separate HW heating system.
I have 5 zone valves controlled by 5 t-stats for the HW BB heating system and one furnace/AC thermostat(house is a ranch+ basement)
Installation was cheap and works well. Furnace is only for backup backup.
Not sure if I would spend the money for a more elaborate electronic system and sacrifice reliability. I think the the old standard 24 volt electrical is more reliable.

The Benefits of Zoned Heating and Air Conditioning.

https://www.newcentralairconditioner.com/

If properly installed and designed by a home heating and cooling professional, zoned heating and air conditioning can dramatically increase your comfort and energy efficiency.

1.) Energy Savings

When combined with programmable thermostats and Energy Saver mode, you can save up to 35% on your energy costs. By only having to produce a certain amount of conditioned air for the different “zones,” your HVAC system won’t have to work as hard.

2.) Easily Integrated

Zoned heating and air conditioning can easily be integrated with your current system.

Ductless mini-split systems can also be used for your zoned heating and air conditioning — no ducts required. Keep in mind, however, that for multi-zone applications, you will need to use an outside heat pump.

3.) Improved Comfort and Control

Zoned heating and air conditioning are as simple or sophisticated that you want it to be. You can use your programmable thermostat and smartphone apps to have complete control of your home, or you can simply change the temperature manually.

Regardless, by being able to change the temperature of each zone, you will have more control and comfort than ever without having to disturb other household members.

4.) Works for Both Heating & Cooling

Zoned heating and cooling is a convenient and efficient solution for homes with multiple levels, sprawling designs, and large open areas that formerly relied on supplemental heating and cooling methods.