AD-EXCELLENCE advertising & marketing. has 30+ years experience in advertising and marketing. We are based in beautiful Colorado Springs, CO, at the foot of Pikes Peak. AD-EXCELLENCE is a full service advertising agency in Colorado Springs. What that means to you, is that we offer the convenience of a one-stop shop for all of your advertising, marketing, public relations needs. You have the convenience of working with one company not having to hire many companies to accomplish our company goals.