Arnold was a bit underrated imo as an actor. I always believed what the critics said about him, until I watched him opposite Jamie Curtis. He actually did put quite a bit of emotion into his roles.
Sly speaks the way he does because he was removed from his ******'s womb by the use of forceps, btw. He was not too shabby in "Shade". He seems to remind one a bit of old Hollywood.
Still, I'd go with Arnold. He can make one laugh.