I like entry #6 , but maybe if you make the circle look like a 'b' more by making a line come out the side (so it looks more like a 'bw' then an 'ow') as you have in your logo. And could you please change the colors from black background? something a little more tranquil.
I don't know what it is about entry #8, but i think it needs to go further. I'm sorry i can't give you any pointers for that one; and the same thing goes for entry #7.
#8 you like it because is minimal, clear, secure and reminds you womans beauty.I t's fresh, elegant as it is. Although I will try more versions and for the other logos, but not tomorrow because i will not be in my town.