Which graphics card should I choose?

[heroicevil]

Hey this is my first building a computer and I found two graphics cards; the first one is the Sapphire Radeon HD 6950 2GB more info about it here -> http://www.newegg.com/Product/Product.aspx?Item=N82E16814102921&cm_re=Radeon_hd_6950-_-14-102-921-_-Product
My other choice is two HIS Radeon HD 6850 connected by CrossFireX. More about it here -> http://www.newegg.com/Product/Product.aspx?Item=N82E16814161348
So which one should I choose? I plan to play games like Black Ops and Battlefield 2 Bad Company with decent graphic settings and no lag. PLEASE HELP!!!

 

[JackNaylorPE]

Here's a summary ya might find helpful. Guru3D uses the following games in their test suite, COD-MW, Bad Company 2, Dirt 2, Far Cry 2, Metro 2033, Dawn of Discovery, Crysis Warhead. Total fps (summing fps in each game @ 1920 x 1200) for the various options in parenthesis (single card / SL or CF) are tabulated below along with their cost in dollars per frame single card - CF or SLI:

$155.00 460-768 MB (314/592) $0.49 - $0.52
$155.00 6850 (371/634) $0.42 - $0.49
$170.00 6870 (434/701) $0.39 - $0.49
$245.00 6950 (479/751) $0.51 - $0.65
$265.00 6950 Frozr OC (484/759) $0.55 - $0.70
$210.00 560 Ti (455/792) $0.46 - $0.53
$315.00 6970 (526/825) $0.60 - $0.76
$220.00 560 Ti - 900 Mhz (495/862) $0.44 - $0.51
$335.00 570 (524/873) $0.64 - $0.77
$500.00 580 (616/953) $0.81 - $1.05
$725.00 6990 (762/903) $0.95 - $1.61
$700.00 590 (881/982) $0.79 - $1.43

Prices haven't been checked in about 10 days