Differences In Image Stabilization Domes

So I've got a project running now where I need to place a few dome camera on 4 of these babies. (No clue what they're called in English)

I'm a tad worried I might have troubles with shaky images and even though our regular choice of dome (Samsung) has digital image stabilization, I fear it might not be enough.
Now I know allot of brands have image stabilization, but I was wondering are their much differences between them all.

So here I am, asking if any of you has the experiance with this? Are there certains brands better at this, than others ?

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