Depends on your preference.
Makor Upsides to the switch imo:
Be alerted via email if the ato runs too long or doesn’t run at all, able to turn it on and off with your cell phone, set max run time.
I don’t know how much of that the tunze can do as I setup my ato with GHL from the start, but if any of that seems worth it, than you have your answer.