Of all of these #122 is my favorite! I love what you've done with the "b" in the icon. If you have the time, perhaps you can find another font that is even more "rounded" to go below it.
Wow! Great job! I really like #135 a lot. Very interesting font alteration you've done to create the "b" and the "p". Thank you so much for the great entry. and great color choice. I'm quite fond of it actually. :)