Neither of those cards are any good, especially not worth the 200 dollar price tag. I paid about 150 for my Radeon 9600 Pro, which outperforms the FX5600 in most tests, and the R9500 can still be found for around 170. Go for one of the Radeon cards.
You could also pick up a Radeon 9700, non pro. They are around 220 at Newegg last I checked, and they pretty much crush the 5600s across the board.