There's no best. I have all 3 in use. It all depends on your build, gear and specific needs.
I would say, if you don't need that 10 ias or mana leech from Nosferatu's, String of Ears is considered the most useful for a Barb/Pala/Druid due to its damage reduction and life leech. And it can be easily upgraded to a Spiderweb Sash for additional defense at no cost of attributes.
I'd rank Verdungo's the lowest of those belts.
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