Ninjamonkeh :
I'm confused, never had a water cooler but isnt the whole point to water is not to have all the fan noise? Perhaps im wrong and its only if you want to overclock.
Water cooling rigs (good ones, anyway) tend to be quieter only at peak overclock levels, when the cooler is driven to run at its hardest. There was some early attempt to claim a water cool system would be quieter - nut unless it allowed you to get rid of a fan or use it at a lower speed, that really doesn't make a lot of sense, because the radiator needs a fan (or fans), too.
The advantages of water cooling are space around the CPU is much better, the height of the water block/pump assembly is much lower than high-end air coolers so you can use it in cases where height is an issue (assuming you can figure out what to do with the radiator), weight on the mainboard is significantly less, and overclocking limits are higher (better) with the best water-cooling solutions.