What graphics should i get for my rig?

[nightside]

Hello everyone, First i wanted to thank you for any advice that is left. My current rig is a custom built.

Intel(R) core(TM)2Duo CPU E8400 @ 3.00GhZ
RAM - 8.00 GB -(4 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
XFX GeForce 9800 GTX+ 512MB 256-bit GDDR3 PCI Express 2.0 x16
Windows 7 RC- 64 bit
CORSAIR CMPSU-750TX 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS
Monitor- lg 23' inch 1080pi


my price range is 300-450

Im going to be playing AION online, and want top notch max graphics with almost MAX FPS- on my default resolution

 

[obsidian86]

http://www.tomshardware.co.uk/forum/page-240001_11_0.html