I don't think you'll have any problems if you select an AMD cpu. I have an AMD Phenom II quad core and it's run everything I've thrown at it without a hitch. It's all a matter of choice and price comparison.
Might be true. I updated my Sons PC with a AMD Phenom II 945 CPU a while ago and it seems he is very happy with it. Now the outdated Graphic card is the bottleneck in his System.
If i don't raise my budget too much i will either go for a i3 or the Phenom II but i will make sure that it won't be lower than 3GHz.
Thx for help guys.