Hello,
Thank you for your consult at DoctorSpring.com.
I can only give you general information regarding this and recommending one policy over the other is not only difficult (many finer details make up the policy and it is best you do the research and understand your needs); It would also be inapporiate to favor one or the other. The portal is not meant to provide precise diagnosis, treatment and advice on medical products due to the limitations of online medium.
The specifics of health insurance policy vary as per you need like if you would reimbursement of all hospitalization costs (take due care and look into exceptions in terms of diseases, surgeries etc), pre and post hospitalization expenses, claims settlement gurantee duration, ambulance charges, cashless services with accredited hospitals, income tax benefits, terms of the age limit etc. A lot of fine details make it hard to recommend one policy. More on this here:http://www.jagoinvestor.com/2011/05/health-insurance-buying-steps.html
ICICI Lombard, United India Insurance, Apollo Munich, Max Bupa are major players.
To compare health insurance premiums following potals would help -
http://www.policybazaar.com/health-insurance/health-insurance-india.aspx
https://www.gibl.in/health-insurance/
You could also buy them online. But these are long term policies - I am not sure if you were looking for short term travel insurance - for which I have no particular knowhow.
Regards