For the first question - my logos are like my babies - love them all, bit honestly, I really like the one that is currently ranked 1st. Because it combines the warm (red) and the cold (gray background). It's balanced. I also like the versions with the backgrounds - makes the whole look to pop-up. More easily to remember. :)
About the 2nd question - I really was surprised that you see the icon that way, because my idea behind it is that this triangle is actually the top of an capital M, also it's a surface in perspective. As you will see with this update, I'm trying to change it, although I can't see it as an IUD device :)
Other than the mark still reminding us of an IUD device, we really like Entry 9. If you could give us this design with another mark, that would be great. Also, if its selected as the winner, we would need a reverse color as well as black and whote version.