Thanks for the replies guys, guys, now since everyones agreed on the same thing i can't really pick a best answer, so one more quick one.
The phenom 965 is obviously a great cpu and aged well, but that doesn't change the fact that its still old, so would it be worth to invest in the I5-2500k/2600k if im on a budget build?
Oh yes, if your budget allows, the i5 2500k is a great way to go. It'll overclock like a beast, and it'll smoke the Phenom out of the water
The Phenom is a very modest chip, but when compared with an i5-2500k, there's no discussion there.