Personally this one is my favorite. I like the energy in it and the M along with the font below gives it an engineered look. If we do select a logo this colorful then we will need to be very simple in the website design. This will please the eye plenty.
Yes sir, sir you could select me the winner of the contest I'll provide you all the source files like vector(Ai) , PSD , JPEG along with the transparent image of the logo.