I might be getting a new graphics card, and am looking at the ATI Radeon range. The Radeon 9200 128mb is good for my price range, but is it worth spending £20 more for the 9600 128mb? Also, am I right in saying that there is no difference between the 9600 and 9600pro other than speed i.e. you can overclock a 9600 to be a 9600pro.