Looking to upgrade my GPU

[JamesPromIII]

I'm looking to upgrade my GPU. I have a PNY 9600GT and a 430 watt PSU. I'm willing to upgrade my PSU also and i'm willing to spend around 300 for everything what do you guys suggest I get?

 

[LinkedKube]

http://www.newegg.com/Product/Product.aspx?Item=N82E16814103076
or
http://www.newegg.com/Product/Product.aspx?Item=N82E16814143199

along with this psu

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371015