Very interesting shapes and colors on #8. I also like the lettering. If #8 was black and whit (for my working drawings) would we lose the detailing and subtle contrast.
#75, #76, #77, #79 are all very interesting. I consider them all the same in the 6th spot on the ranking. I like the color for my name on #77 but I would pick the red color. I am not sure at this moment if the more refined logo #8 or the 70 series is my favorite. I need to think about it a little more.