What are the differences between an iPhone 5 and iPhone 5c?

I can't decide which one I want, 5c is around $170 cheaper, but I like the aluminium feel of a 5. Are there any other significant differences?

Added (1). $70 cheaper, my bad

Added (2). Ohh, I was wondering why the official iPhone 5 sales had disappeared from ebay, that helps a lot.

I honestly think they have the same specs. That was my understanding. Also Apple doesn't officially sell the 5 any more.

Size

The iPhone 5 and the newer 5C are the exact same phone, it is just that one is wrapped in a colorful plastic shell vs. An all-aluminum body. Apple has discontinued the 5 on their site along with other retailers following the same action, but some carriers still hold the 5 at a slightly more expensive price. If you are on a tight budget, I would recommend the 5C. However, if the all-aluminum body is something really important, go for the 5 while you still can. Either way you get the same performance.

5C has a little better hardware and better battery then 5 had.