I built my current system about 1 1/2 years ago and decided I wanted to try water cooling. Gave the Corsair H50 a try, very impressed with it so far. Easy install. House is currently about 75 F inside and cpu running approx. 95 F/ 34 C. Winter time can knock of about 10-15 degrees.
http://www.corsair.com/cooling/hydro...pu-cooler.html