Data is generally expensive in Nigeria and in this digital world, and by expensive I mean you dont get good value for yr money and I believe data should also be unlimited if you are willing to pay the price. From research, I discovered that only one network provides unlimited data allocation to do as you please with no limits except time. @ntelng has some cool data plans that will simply blow your mind for as low as 500. Check out some this plans Unlimited Night Starter - 500 for two nights Unlimited Daily - 1500 for two days Unlimited Weekly -5000 for 1 week Unlimited Family-17500 for 30 days
I will choose Airtel over others because it is not only cheap, they have a strong network that would make your browsing experience a sweet one. There are hardly poor network issues with Airtel but that does not mean there isn't any but it's minimal.