Hello:

Will be having installed a new gas, forced hot air system shortly in my
son's house.
Will be a Trane/American Standard 80 series, two stage, and probably with
the variable speed blower.

Would like to learn a bit more about thermostat options so I can
agree with, or disagree with, what the HVAC contractor might recommend.

Pretty confusing subject.

To simplify things a bit, let me say that I want a Honeywell, programmable,
and it should not be a mechanical version.

So, I guess it is the Vision Pro line, or the Chronotherm® IV Plus
Programmable Thermostat line.

The hooker is that neither my son, or his wife, are very mechanical or
technically inclined.
Don't want to get them something they won't be able to use easily.

Any thoughts on either of the above regarding usage and programming ease,
reliability, etc. ?
What are the major differences between ?
Pros and cons, etc.

Much thanks,
Bob