I'm Droppin AMD for Nvidia, first timer. need an opinion

For the first time, i'm going to be switching from AMD to Nvidia.... i currently have 2 crossfired 6870's, and i'm going to go down to 1 Nvidia card.. i need opinions on which one i should pick... i'm thinking a 780 GTX.. but i'm not seeing a difference between these 3.. other than the price... anyone have an opinion on the difference between these and which i should pick?

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130918

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130943

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130951

the 1st is superclocked but i would get #2

The classified is quite a bit different than the others. I wouldn't say it's worth the extra though unless you're in to benching.

The 1st one.

Definitely the first one.

The classified is the best 780 out there.