For £160 you should be saving a little extra and going with a more powerful card, that budget is at the threshold of the higher-end stuff like a 256MB X1800XT for £190 which wll demolish the 7600GT and X1800GTO.
You shouldnt be paying more than £130 for a 7600GT if you shop around, and at the very least for £160 you should be getting a used 7800GT.
You shouldnt be paying more than £130 for a 7600GT if you shop around, and at the very least for £160 you should be getting a used 7800GT.