Final piece of the puzzle needed.... the graphics card.

Well Folks,

I have been on here months now I think, picking peoples brains on all my components for my new build. Actually my first build, which god knows I am going to need help putting together. I've had some great people help me on here and all I ask is one last piece of advice. I've asked before, but I need help in picking that one last piece or just justifying my current choice, which is the graphics card. I am not a fan of either nvidia of Radeon, I just want best bang for buck, but to future proof this card as much as possible in the same sense.

I am going to be running at 1920 x 1080, single monitor. I like FPS games and then games like Oblivion & Skyrim. I dont plan to overclock anything if I can, but maybe years down the line I might do something if things slow up.

My current choice is SAPPHIRE Vapor-X Radeon HD 7970 GHz Edition 3GB which is $455. I can go to $475, not a cent more (I did want the matrix 7970, but its now over $500, so no way).

Please give me some good options. I feel like I want to stay within the 7970's or the 680's, but again I am open to options. I am also going to buy this withing the next few days, probably after cyber monday.

Thanks inadvance,
Alan

P.S Here is my build as best I can remember without going into model types.....
i5-3570k
COOLER MASTER Hyper 212 EVO
Antec High Current Pro HCP-750 750W
COOLER MASTER HAF 932 Advanced Blue Edition
ASUS P8Z77-V PRO
1TB seagate HDD
256GB Samsung 840 SSD
Optical drive - just a dvd player/burner
G.SKILL Ares Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 CAS 8
ASUS 23" monitor
Sidewinder Keyboard
Cooler Master mouse
Windows 7 - 64bit
I think thats it!!