I agree....I had hi hopes for the 560-448 but the factory OC'd 560 Ti's are just to damn good fo th 560-448 to make sense on a price / performance basis. The factory OC's 560s with robust VRM;s and a=improved coolers have been OC's 30+%
http://www.pureoverclock.com/review.php?id=1201&page=17
OC'd just 9.5 % (outta the box factory OC'd 900 MHz models), they get 862 fps in Guru3D's game test suite..... that compares with 873 fps for the 570's, 759 fps for twin 6950s and 825 fps for twin 6970's.
As to the OP's original question < $200, the 6870 offers the best price performance ratio at 39 cents per frame as a single card and 49 cents per frame in CF. The 900 Mhz 560 Ti is just a bit higher at 3 cents per frame (single card) and 50 cents in SLI....following is from Guru3D's game test suite
$ 170.00 6870 (434/701) $ 0.39 - $ 0.49
$ 220.00 6950 (479/751) $ 0.46 - $ 0.59
$ 260.00 6950 Frozr OC (484/759) $ 0.54 - $ 0.69
$ 205.00 560 Ti (455/792) $ 0.45 - $ 0.52
$ 320.00 6970 (526/825) $ 0.61 - $ 0.78
$ 215.00 560 Ti - 900 Mhz (495/862) $ 0.43 - $ 0.50
$ 340.00 570 (524/873) $ 0.65 - $ 0.78
$ 500.00 580 (616/953) $ 0.81 - $ 1.05