The Nest Hello door bell is in a different league to the Ring 2.
I had a Ring doorbell and it constantly notified me with false alarms, even with the detection zone on minimum. So much so i had to turn it off if i ever wanted a full nights sleep. In the end I returned it.
I then bought a Nest Hello. I had a couple of false alarms initially but that was due to the area of coverage i set up. But once I got that adjusted I haven't had one false alarm and it works perfectly. I'm really pleased with it.