#24 is a nice graphical piece, but it depicts people giving their backs to one another. That gives off a different message to some people
#23 & #22 are also nice designs but I feel as though the only reasons I know those are people is because I read the contest brief. People who don't know the business wont all understand the meaning.
Thanks for the entries. They look great, just don't quite fully grab the concept we are searching for.