I am able to get the 2500k for $160, the 3570k for $180, and the 2700k for $230. I will not be gaming for at least 6 months, because I need to focus more on school, so I figured I could put a little more money into the cpu right now. Is the i7 worth the extra $70 over the 2500k , or is the i5 3570k a good median?