Is sprint good for iPhone 5s?

I want to buy the iphone5s and I want the sprint plan($80) because it has unlimited text, voice and data. Is sprint a good plan to choose and can you explain exactly what exactly data is for an iPhone? Also, is the internet bill separate from the $80 sprint bill and if so, how much?
Please don't be rude

As far as Sprint being good, your location is also a factor. They may not necessarily be good in your area vs somewhere else. So look into that as well. Coverage map or see what others have said about their service in your area. Even if it is not good now its not to say it will never improve.

Data is internet access from the carrier. If you want to use internet but not in a Wi-Fi covered area, that's where data comes in.

Data is part of the package.