For $99, if rather have the 5C.
Not if you're not a fan of the color scheme for the C. The internals aren't that much different.
For $99, I'd rather have the 5C.
walmart has em for $79
The 5C is a better buy at $49 at other non ATT stores than the "old" iPhone 5.
Why?
1. Cheaper
2. Same hardware internals...well 5C has 5% higher battery
3. 5C supports more lte bands
iPhone 5 and 5c 16GB (any color, any carrier) is $0.00 for new customers or add a line at Best Buy, In Store and Online.
In fact, all 5s models are $100 off for new line or new account with 2-year contract. Extra $50 Best Buy giftcard for anyone who reserved the PhoneFreedom offer.
Source, Slickdeals (Hot Deals forum)