Gas Leak Detector, Expert Picks

I researched about the best gas leak detector for the past few days because I want to make sure my home is safe from natural gas or propane leaks. I read reviews on The New York Times, Consumer Reports, and Popular Mechanics, and they are marking these two as best:

Kidde Carbon Monoxide, Gas Detector
https://www.amazon.com/Nighthawk-Monoxide-Explosive-Model-KN-COEG-3/dp/B0002EVNJ6?th=1

4-in-1 Natural Gas Leak Detector & Carbon Monoxide Detectors
https://www.amazon.com/Natural-Detector-Carbon-Monoxide-Detectors/dp/B0DLSZZLWL

However, I am having trouble deciding which one would best suit my needs and need your expert advice. In my home, I use natural gas for heating and cooking, and I want something accurate, easy to use, and preferably with both visual and audio alerts.
So which one should I buy? Any recommendation will be appreciated.
Thanks in advance!

Both of these are plug-in standalone detectors. They don’t appear to have any outputs or signals that could be used with Konnected, so I have no opinion to share here.