Here are some helpful hints from one of the volunteers from our marketing team:
"I really like the posters by scar, agent csl, and tbarnett17.
Scar's has the best impact for me, but needs more detailed info about speakers.
Agent csl's would likely be the cheapest to print en masse in color
(due to it's fairly monochromatic color palatte) but also needs more
detailed event info.
Tbarnett's looks great, but the back of Ron Paul's body looks a little
lumpy and confusing. Not enough people might know who that is. Plus,
he's not turning his back on us! (symbolically speaking

"
Now, obviously the criticism that the posters need more detail is not the artists' fault as the details (speakers,talent and events) are still being worked out.
I like all of them and feel that they should all be used once the details can be put on them.