While State Farm's shopping experience is well-reviewed, customers did not feel as strongly about it's claims handling process. The company scored about the same as the other four large companies, but was still mediocre. A large national company may be expected to not be very efficient because of the various departments involved in handling individual claims. If you want the assurances guaranteed to you by a large, "legacy" carrier, then State Farm is the best to go with.
Permanent life insurance policies do not expire. They are intended to protect your loved ones permanently, as long as you pay your premiums. Some permanent life insurance policies accumulate cash value. That means, the value of the policy will grow each year, tax-deferred, until it matches the face value of the policy. The cash can generally be accessed via loans or withdrawals, and can be used for a variety of purposes. This type of plan is typically portable so coverage can continue if employment terminates.