Principal Financial is another reputed life insurance company in the USA that provides insurance policies for businesses as well as individuals. Quality service is an inherent feature of this life insurance company, and apart from offering life insurance it also offers dental and vision insurance. The life insurance encompasses varieties like term insurance, survivorship life insurance, group health insurance among the other types, and it also provides aid for individual retirement planning. It is one of the top 10 life insurance companies in the USA that provides excellent services.