Should I upgrade to iPhone 5c or 6?

So i have a 4s and my contract isn't up yet but I was thinking of buying the phone full price. But I don't know which one to get…

What's your opinion? Money wise, phone wise, battery wise, etc…

6 I have it it's the best investment

Look at pros and cons of both because the cons of the iPhone 6 are that the plus model of it bends.

6. Just don't bend it.

IPhone 6, while the more expensive option, is worth the money. The battery life is ridiculously long. I only charge my phone every couple days & I'm on my phone most of the day. The 5c battery life isn't very long and my old 5 used to die before the end of the day everyday. The camera on the 6 is also way better, if you care about cameras. The 6 also has many cool features such as Touch ID that the 5c doesn't have. But if you are strictly trying i save money then i would go for the 5c. Also, I would suggest going to best buy for either purchase. They have a great trade in deal and you can use the trade in money for your new phone. In my case, I traded in a 5 for a 6 and the 5 was worth $225. Best buy PAID me $25 for a new phone. Crazy!