There are countless term insurance life insurance companies. As someone who's been a life insurance professional for more than 20 years, I can honestly say that the best term life insurance companies, the top rated term life insurance companies, and the best rated term life insurance companies are very similar. It's not to say they are all exactly alike but they are usually similar. To compare term life insurance companies is really a matter of what's important to prospective insurance client.
Insurance companies use the term underwriting to determine who pays how much for what. Different companies have different underwriting guidelines. Its name literally means that someone in the company places a signature on the policy saying a particular person meets the company's underwriting guidelines.