I am having trouble to vote. Hard to choose. 
I know how you feel.
Truly, this is the hard part.
That is why I am so thankful that kussaka made his vote. You could just see his efforts - but he made his choice.
Maybe you can read the links he provided for inspiration:
Lot of nice logoes, look great! It will be difficult to choose.
Maybe these articles can help to choose.
http://thebetahub.com/how-to-create-and-choose-the-right-logo-for-your-business/
http://www.martinkoss.com/social-branding/how-to-choose-the-right-logo/
Maybe these articles can help to choose.
http://thebetahub.com/how-to-create-and-choose-the-right-logo-for-your-business/
http://www.martinkoss.com/social-branding/how-to-choose-the-right-logo/
Another approach is to look at the list of designs, and vote strategically: http://prezi.com/zk-cuegzir2_/logo-for-ora/
Pentamon