Unless you were building a server you don't want to buy a Bulldozer chip. Most games don't benefit from having 6 cores, so based on the choices presented I would chose the AMD Phenom II X4 965: $165.
If I were building a new computer I would chose the Intel i5, but it does cost a lot more money, but as the computer is just for games then you might as well go for the cheaper Phenom and buy a better graphics card with the money saved.
we pay a lot more for PC, the 500 gaming machine of tom's here cost like 800 or 900. But we are used to , import taxes and retail profit.
im gonna wait until xmas to see how much the core i5 drops, if i buy intel im going for the 2500k with gtx560 Ti.
thx all for your answers.
Let me clarify. I didn't give a reason for getting an i5 sandy bridge over a phenom or bulldozer. The reason is they do more work, are more efficient, and are a similar price. If you can't get an i5 sandy bridge in your area, or if the markup is too much, get a phenom. Bulldozer is way overpriced for what it does.