I wouldn't trust any of the list for stability testing you included.
I would do 1h max of hci-memtest to make sure it's not supper unstable and move to
y-cruncher all core , cycle all stress test; will hit memory / memory controller very hard.
Anything else is a waste of time.
you can pass prime95 large, hci-memtest for weeks non-stop and crash/reboot on y-cruncher or your game in 5mins with memory oc