Do Policies Differ By Much?

I am wondering whether the life insurance policies offered by different companies are very different, or if they are for the most part the same. We are trying to compare rates to find the best term life insurance, and want to know if the policies are likely to be the same from the different companies we are trying to compare. Are there some companies that don’t offer as good a policy as the other companies? Or are there some options that are standard at some life insurance companies but considered extras at other life insurance companies? Any help would be appreciated.