Market Research, Focus Groups, Customer Insights & more… Boasting nearly 6 decades worth of experience, Consumer Opinion Services (COS), is your one-stop shop for market research, focus groups, and consumer insights. COS has had the honor of working for some of the largest brands around the globe. We are proud of our rich history and believe you will quickly see the benefits of working with an agency that has more than a half century of experience in the field of market research, data collection & analysis.