I love hot talk during sex. Heavy breathing, expression of sheer lust and horniness, moaning and groaning, and even giving suggestions or asking "Do you like that?" would be major turn-ons for me. Verbal communication in general turns me on. And anything that provides more intimacy and lust in the heat of the moment is fine with me.
EDIT: Just saw your poll, and I'd have to say that the "full conversations" option is not what I mean by verbal communication in bed.
Sure, that definitely helps get me INTO bed by increasing connection and intimacy beforehand, but once I'm in bed, all sex-related talk/sound is what I want.
Usually with us, it's just moans and heavy breathing, so that's what I voted. But I'd love any of the options you listed (other than full convos!).