Besides, air cooling apparatus like the Thermalright I purchased cool just as well as watercooling I think, without the potential headache of a spill.
Air cooling does not compete with watercooling on the extremes. If you want a louder system that is moderately overclocked with higher temps, then Air cooling can provide that. For all but the uber-extreme overclockers who want that last half a Mhz, air is plenty fine.
I haven't even tried to truely max my system out to the extreme. I briefly booted into Vista64 at 3.6Ghz and it seemed stable but I didn't notice enough of a difference so I backed down to what I know it's rock solid. It's fast enough for me at 3.4Ghz. Where the higher end water cooling shines is in the silence of the system and lower temps while providing far more headroom for overclocking.