Agree with PP. I recently switched, got online quotes from geico & progressive, and decided progressive was cheaper, and called a local agent. He asked me if I was wanting progressive specifically, or if I'd rather he run some quotes with other companies as well. I told him go ahead, and he found me an even cheaper policy with Met Life.
Super. Easy. I told him what coverages I wanted, and he did all the work, saving me hundreds of dollars a year.