I'm a small business owner who worked with Marketplace to shop for and purchase health insurance for my company. I cannot say enough good things about this agency. They are knowledgeable, quick to respond, and honest. Carolyn, who founded the company, worked tirelessly on our behalf, was happy to answer questions, and helped us quickly find a plan that would work for us. While I haven't used them myself for Medicare, they also assisted people we referred to them in sorting through the (nightmare of) understanding and choosing medicare supplementation. Highly recommended!