Dear Sir.. i want to cover Critical illness.. so which company is best ? my age 31 year.. i am thinking for Aviva Heath Secure ( For cover Critical illness )… should i buy or not? there are so many exclusion in this policy… that word i can not understand.. so please help me… Should i buy Aviva health secure or Bajaj or HDFC ergo critical illness polisy? please help me…. Thanks in advance