Best place to purchase health insurance?

I am starting my own small business and need health insurance for my family. I won't go with Kaiser, please don't ask why. I need an HMO with no deductable or a very low deductable because in my area the Blue Cross, Blue Shield, HealthNet networks have pretty good doctors and hospitals within their ';approved'; networks. It will be a family-owned sole prop business. I live and work in California, but if there is value in incorporating in another state for the purpose of taxes or prices on health insurance, I guess I could do it...because I have not formally formed the corporation yet. I used to be under the impression that the best prices for Heath Insurance came when you worked for a big company, but things seem to have changed. I recently worked for another smalll family-owned business, and they got very good rates by incorporating and claiming a Headquarters in Washington. What is the best strategy to get the best insurance at the lowest rates for a small group- one family? Thanks!