None of those are really 'ultimate'- you would need to consider subambient cooling like LN2, liquid helium, or even watercooling.
This vote is essentially for air cooling, was that your discussion?
Yes rubix. Im not after the best CPU cooler and the highest OC i can get.
What i meant was, between the four ive listed, which is the best or is there any other that you guys would recommend? And also if there is any minor or serious problems you guys know or have encountered with these coolers.