hi guys,,I am planning on buying GTX 580,,,but I have doubt about choosing between GTX 570 Phantom or GTX 580 considering their prices,,,,in my country,GTX 570 Phantom is around 500$,,but GTX 580 is around 700$,,,,Is it worth it? I know that GTX 580 is better than GTX 570 Phantom,,,but will I see much difference in gaming?? I compared their benchmarks and saw that there is little difference between their numbers shown in charts,,,please help me as I dont want to choose without consulting,,,THANKS in advance