I believe #50 has the potential for many applications and also on a B/W contrast would look good. Maybe, if a "clicking hand" (to refer to the click to help concept) is added somewhere amongst the figures, might complement the desired impact.
I also liked the button for "click to help" and the typo of this version more than teh others.
Can I see a version of this with all the text in one side (would be just a variation for some applications, not a substitute).