What do you guys use for quick stability testing?

Right now I'm doing 2 passes Linx and 4 minutes of OCCT... is this sufficient to see if a certain voltage is good?

I'm possibly running "stable" right now 211x19 4ghz with 1.2v vcore / 1.2v vtt / 1.2v ich and ioh / 1.14v qpi pll.

What do you guys think? What's your method for quick stability testing? I mainly use the 2 passes Linx and 4 minutes OCCT to see around where I should I tweak for a serious 24/7 OC.