Hi,
Remeber the services are delivered by the agents and sales person mainly. So u need to figure out a knowledged and experienced sales person.
Both the companies are offering health insurance policies and are well accepted by people at large. but before u select any of the company u must compare the product and their policy terms and conditions.
Do remember to keep copies of proposal form and details of information you provide to your agent, as these are important. Do disclose the details of pre-existing illnesses, if any and enjoy being insured.