If you're looking for an agent to sell your home, look for not just the agent who has sold the most homes, but also if they're experience is customized to what you need. For example, in the LA area, the agents who sell the most homes often times are REO agent -- they have specific programs tailored for quickly selling REO properties, which are a bit different from standard sales. Also look for the types of properties being sold -condos, single family homes, income properties. Plan to meet with a few agents, who will give you a listing presentation and tell you how they plan to market your home, and work with you throughout the process. Choose the one who you feel the most comfortable with, who you have a good rapport with, and who has a track record of success.
Best of luck, and if you need a referral for an excellent agent in your area, feel free to contact me.
Keller Williams Realty