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+1 for Dromaesaurus
Let's be honest here, most people are not gonna pose these chicken-sized raptors next to a truly 1/6th inch Hot Toys figures.
Most people are gonna pretend that these are the size of Jurassic Park raptors and pose the rapters with 1/12th figures or even the 1/18th GI Joe figures.
If that's the case, and you still want to have a semblance of scientific accuracy then Dromaesaurus is your best bet, because he's the most closely related to the recently found Dakotaraptor which was truly the size of a JP raptor