Hi,
Thank you for your detail feedback. You're right, the Shield really the main concept I've offer. The way it blended to the text make the logo look strong. However, frankly I am afraid by using more than one color can decrease its strong look. I'll prepare it asap, however. So you can compare them by yourself.
Anyway, since it's a detail work and I am sure the shield concept is really strong for you to have long lasting logo(based on my experience so far), will you consider to increase the prize? Thank you for advance.
Regards,
ian