I need a case for overclocking. I am going to be overclocking a 4970K with a Noctua NH-D14 cooler. I originally thought about the Fractal Design Arc Midi R2, but then I got an offer to buy the Antec P280 for $30 cheaper. Should I invest in the case or is the Arc Midi R2 better? Silence is not a deal breaker for me, but if performance is about the same I'd rather go for the silent one.