I liked entry #7, but the first thing the SM made me think of was S&M, especially with the whip-like line at the 2:00 position. Maybe it's just me, but I would guess that I'm not the only one who would make that connection.
#25: I like this a lot. Could you please make a second iteration so there is no line coming out of the image on the upper right corner - e.g., so it is a rectantular logo with nothing sticking out?