(Not me, I'm on the Cape, but I can help you choose a local pro when you are ready.)
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It not only goes over all the areas you might want to consider when thinking about insurance, but gives a break down on market share of insurance providers in Massachusetts.
That said, depending on the complexity of your insurance situation (i.e. do you own cars? life insurance? health?) you may find consulting an Insurance advisor rather than talking directly to an insurance company to be more beneficial to you. To that end, you might consider contacting Aronson Insurance http://www.aronsoninsurance.com, ask for Joan Pagel.
Best of luck and please, if you are thinking of buying or selling a home, let me know if I can be of service. Cheers!