I prefer airtel over other operators as it provides best services as compared to reliance idea or vodafone. you have to pay more bugs if compared to reliance but airtel never compromises with the quality they provide. whenever travelling to rural areas, all other networks are missing but airtel service is always available. I had used all other operators and from all of them airtel services are the best. I suggest you buy an airtel services. both voice and data services are outstanding.