Need help choosing a video card.

Going to buy a new vidyuhi in the price range of ~20K. Could you tell me the best option. And stores where you usually purchase the hardware (especially interested in Peter). Current configuration: percents. AMD Fx(tm)-8300 (8cpus ~3.3 Hz), 12 GB operative, the power is 650 watts, mother asus m5a78l-m lx3. The monitor resolution is 1920x1080. Oh Yes, happy new year everyone c: