Some of the important factors include the size and age of the insurer, total life insurance policies issued, assets, liabilities, loss ratio, number of years in business, number of complaints on file with the Departments of Insurance across the country as it relates to the specific insurer, claims handling, customer service, etc.
However, each year, the III.org issues a report showing the leading insurers for the previous year which issued the most individual life insurance policies.
Also, it's a good idea to take into consideration the pricing offered and the financial strength ratings of the insurers you consider, when purchasing your life insurance policy.
Here is a list of the best life insurance companies in America.