I don't know why people are fooled by prices when it comes to performance of Air cooling. The D14 is overhyped and overpiced for its performance.
http://www.hardwaresecrets.com/article/Prolimatech-Panther-CPU-Cooler-Review/1475/6
Note the hyper 212 EVO near the top, 36 degree delta? the D14 can be found 3 degrees warmer at 39 degrees.
The 212+ review has it at 44 degrees, but the EVO is way better performing than the 212+ and only $5 more. Thats why all the D14 reviews don't compare it to the EVO, but instead just a plain old 212+Conclusion : D14 vs 212 EVO is $50 wasted. youd be better off opting for the 612pwm and still cheaper.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103106&Tpk=coolermaster%20612
But for water cooling, it takes a bit of time and research to do it properly. First time is always a bit tense as your putting "water" near electronics.