There are free on line quoting services. You fill out a quote request on line and then they will forward your information to local agents and companies that do business in your area.
I was curious how this works and tried a couple of these services out a couple months back. I was really impressed how quick I received quotes back and how much rates varied from one company to the next.
For a list of these services you can go to InsuranceEasy.org Also there a great e-article called Save Hundreds of Dollars on Insurance that could be very beneficial to you.