I have seen alot of posts slamming the C. My wife and I have the 4 with Sprint. We are leaving and going to AT&T or Verizon. Id just rather pay the $99 rather than 199 for each. Fingerprint sensor is not a real selling point for me and with a plastic case or not I usually put my own case on it. 5S has some great camera features but I dont think id pay another 100 for each just for that. The speed of the 5C is huge over our 4.