MYTH: The agent with the most listings in town is the best agent to call.
TRUTH: An agent with a lot of listings to deal with is extremely busy - how much time can they devote to you? Especially if you're a buyer and want to look at more than just their listings.
Fact is, a newer (competent) agent can be every bit as effective as a more seasoned agent. Someone working with fewer clients will have your needs in mind constantly.