Airtel is surely the best Mobile opretor available in market now. Although, it is a bit costly than other mobile operators but for me the services I get from Aritel is really worth my money. It provides the strongest Network even in villages and picdae area. The best thing about Airtel is its Internet speed. It provide really very fast Internet. Frankly saying the speed provided by Airtel even 2G network is far better than many other mobile operators 3G speed. I am using Airtel Sim from almost 2 year now and I am totally satisfied with its services.