Finally after months and months of looking and saving I have found a cheap but good one.
The Sapphire Radeon HD 6570, 1GB, 128-Bit, 480 Streaming Processors, DDR3.
Only 3 Bushiness days until it gets here 🙂
I bought it to play Battlefield Bad Company 2 with decent FPS on medium/high.
At the moment I got a 5770 and a 6770 in crossfire which works pretty awesomely. Main issue I have is with crossfire but before they patched skyrim I got good results using only the 6770.
That card should probably work fine for you if you're going to play Bad Company 2 🙂