If you are not gaming across 3 screens or using a 4k monitor, get a 760 with 2GB. You will never need more than 2GB.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125466
If you are going to spend $279 on a card, you might as well spend $50 more and get a 770. it will last you longer before you need to upgrade again.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125463