Well, living with many stressed people and all the pressure on human these days especially in our region, I guess people will start producing mixed body languages in one session, so I will go with words.
And really, we have to trust words more than body language because of the technology we are living now, for instance internet, cell phones, customs, makeups are all examples of how poor body language will become or already is :)
For me I work online most of the time and dealings I make are almost through live chat or Email, which omit any presence to the body language in my life so I have to trust my hunch instead, and this leaves me with words only to analyze and make a good decision about the other person.