MilkyxjThose are good airflow fans, but the Sharkoon's are leagues above those ones when it comes to static pressure, useful for a radiator or heatsink, but not open spaces (the Phanteks' excel at that though).
MilkyxjIt's not fair to compare a 140mm fan to a 120mm fan. Large fans will be able to put out more CFM per dB. That said, the Phanteks is a fantastic fan.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835709026