If you are looking for performance try a hybrid drive that includes a bit of SSD in it. That and 7200 rpms over 5200 which is what your current HDD is. There is a performance boost to load times and it can reduce the amount of pop ups in game. If you are a digital game guy this is a good route. You will have to pay a little more but you can still get a 500gb hybrid for $50 to $100.
Last week's episode of the PS Blogcast talked about it, mentioning their digital copy of borderlands 2 had significantly less pop up. It is known that Gran Turismo load times to race almost cut in half. Not every game will see a benefit so don't expect the world. The 7200 could be loader than your current HDD but you could be able to read reviews on particular drives and I know some people on here have such a drive. Ask ethomaz, he has one and I am considering doing the same soon.
Before the PS3 everyone was nice to me :(
