Should I buy the iPhone 5c or iPhone 5s?

I have about $350 but I wanna save up for when I get a little older. The iPhone 5c costs only $99.99 but the 5s is better and it costs $199.99. Which should I choose?

Well its a matter of what you want more. A better smartphone (short-term) or the money (long-term).

You will have to ensure that you save up for the mobile + monthly plan for 2 years. The prices that you are looking at are subsidized prices by the carrier or the unlocked is around $649 for 5s and 549 for 5c. I would get the 5c as the fingerprint sensor is not worth the cost. And their functionalities are almost the same.

The 5S hardware is twice as fast and is 64bit (and 5S is the only 64bit phone anywhere on the market today). Both 5C and 5S have Airdrop capability and all the iOS 7 functionality but 5S has the best camera and features of any phone out there today. 5S also has the aluminum casing and fingerprint access which is what I like. I also like that you don't even press the home button (won't wear it out) as the fingerprint is automatically recognized when you just put it over it. (5C, C stands for color and has a better battery then the 5 version had and will cost you less then 5S)
If you haven't seen the slo-mo videos taken yet with 5S camera features, go to youtube and search on that to see what people are uploading. Its pretty incredible how cool that looks, I'm amazed the clarity on fast moving things is as clear as it is in slow motion.