Although the couple that writes this blog, Sustainable Personal Finance, is Canadian, their point in this post on insurance agents is well-taken here as well: it never hurts to shop around.
As with all things in life, however, the cheapest coverage is not necessarily what you need. What is included in the coverage? What is excluded? What is the reputation of the insurer with respect to paying or fighting fair claims? What is the deductible? Does the property coverage provide replacement cost or present value? Do attorney's fees reduce the coverage limits? Is the insurer in danger of going out of business?