Hear hear, webmedic! Right on! The only way to know for sure is to test the complete system for yourself.
However, for those who are unwilling to buy lots of different components to find the best fit... I do feel that the basic principles hold true. Higher water flow (CFM) through a given waterblock will improve it's performance. Lower water velocity (meters per second) through a radiator will improve it's performance.
However, with a good waterblock and radiator, I believe that even a low-end pump will give good performance. Just don't skimp so much that the pump ends up being a low reliability solution. Nothing sucks more than burning up your $200 CPU because of a $20 pump. DEATH TO RIO!
