Thanks, wahyudip. Let me offer a few suggestions. I like the three dimensional effect that is happening in the letter symbol in 27 and 28. As I have told others, I love the drama of the black ground but it is impractical for most business purposes on letterheads and business cards. I am picturing y our
#27 with the background white and the company name as in
#10 but with the wording "Peer -to-Peer..." in full width as you have done in 27,28, and 29. Obviously the white/ gray ring around the circle may get lost against the white background. You deal with this in
#30 but the letter symbol seems flattened and weakened. Hope this is helps but I fear it may confuse.