So I'm running an i7 3930k OC'd at 42X, I was running it at 45X but had to scale back because during peak CPU usage (Aftereffects rendering) it was overheating above 80C. Right not I'm using an air-cooled CPU heat sink with a single fan. At 42X my peak temps run around upper 60's/low 70's. I've been eyeing the Corsair H80i and the Antec 920 (both around $100). My question is...are they worth it? Will I see enough cooling improvement from what I am using now (Cooler Master air cooler) to allow me to bump back up to 45X or even higher? And if so which is better, the Corsair or the Antec? Many thanks!