In my research of the best health insurance plan for 2020, Blue Cross Blue Shield emerged as the top pick due to its nationwide coverage and variety of plans. They offer PPOs, HMOs, and tailored plans, catering to diverse health needs and budgets. Kaiser Permanente also stood out with its high-quality in-house services and comprehensive coverage. United Healthcare, with its extensive network and unique online resources, was another strong contender. However, remember everyone's health insurance needs are unique, so what's best depends on your individual health situation and budget.