Hi, good luck on your new build.
Generally from what I know, the higher the rpm, the higher the noise.
A friend had suggested me enermax http://www.newegg.com/Product/Product.aspx?Item=N82E16835214001
but they seem a bit expensive, unless your budjet is high enough. From what I looked these CM seem like a good deal http://www.newegg.com/Product/Product.aspx?Item=N82E16835103022
Maybe you can combine different types depending on the airflow (and style) you want to achieve.