Sasori is all speculation in reference to if his beetles can handle his poisonThere's no way he's beating Sasori and as for Hidan, he'll have to rely on long-range because he has to physically touch his target to transfer the kidaichu. With a taijutsu score of 1.5, getting close to a close-range specialist like Hidan (4.5) ain't happening.
As for Hidan Shino style is distance and wide spread attacks and based on Hidan's intelligence I believe Shino would take this one.