There is a pedestrian simulation software survey intended to look at how many people use certain models. Please give it a go (only two questions and takes seconds to do ):

http://www.surveymonkey.com/s/Y7YK839

Michael,
I am very curious to see the results of this survey after you have collected a sufficiently large sample. I just suggest you to add the STEPS model (I do not see it in the list).

Regards,
Enrico

Enrico,

Sorry, I didn't mention that the survey was created by Hubert Klüpfel and it follows a request by him on the Pedestrian and Evacuation dynamics Linkedin.com forum:

http://www.linkedin.com/groupItem?view=&gid=1809594&type=member&item=24097115&qid=7a054ed2-ee92-42be-bbc7-e5e2fb7e038a&goback=.gmp_1809594