I really like #20 is there a way that you could use the same effect on the "W" and "M" that you have used on the blue field around the "S" bust keeping with the gray color (Resembling sheet metal or brushed aluminum)
In looking at #22 in comparison with other submissions I have realized that I could use some color in the logo. If you could make the faces of the people around the "S" green, yellow, or something else that you think would stand out, that would be appreciate. Look to #40 and #33 as examples.