I'd like to do some overclocking on my i7-860 and need to find a good cooling solution. Currently I'm debating on the Scythe Mugen-2, Prolimatech Mega, Corsair H50, and the Thermalright CoGage True Spirit. My concerns are clearance in my HAF 922 (I'd like to NOT have to remove the side panel fan if I can) and blocking the RAM slots on my Gigabyte GA-P55M-UD2 (I'm only using two sticks, so it's not going to be a huge issue if it blocks the first RAM slot). Does anyone have any advice or other cooler thoughts?