A Certified Financial Planner has passed a licensing exam and will advise you and help you reach your financial goals. A good CFP can help you a lot, especially if you are unsure how to set up your insurance, investment, savings, and financial plans on your own.
You do not need a CFP to get a life insurance policy. If you do get a CFP, he or she should help you above and beyond life insurance -- i.e. retirement planning, investment advice, education planning, etc. It's advantageous to you to pay a fixed price for services instead of a percentage or commission. Negotiate fees up front.
For life insurance, in most cases a term policy will fit your needs. Whole life, universal life, etc., combine investments and life insurance into a single product and are big commission makers for the salesman. They make it sound like the best thing ever, so be aware. One of my rules of thumb is that, generally speaking, the larger the commission is for the salesperson, the worse the product is for the consumer. Welcome to life insurance pitches.
Term life is far less expensive and provides a death benefit and nothing else. If you just had a baby and need to protect your family, for example, term life is often a good solution, easy to buy, and inexpensive. As you stated, any of the major providers will do just fine.