#20 Looks like a campaign button. Not a criticism. Maps are always a winner for me. Good layout and color usage. #15 creative use of the UPC symbol. These are polished, i would like to see a little more raw or industrial look.
#24 is great. like the yellowed look. All the USA's so far (yours any the everybody else's) are blocked. I wouldn't mind seeing the terrains, state lines, etc.