I chose it because it is not crimped and gives possible to improve or add a pipe for cooling a graphics card. Moreover it is very quiet and you can add two fans on the other side, but it is not very necessary.
Personally I cooled Intel Core I7 3820 with this watercooling and a navigation use it rotates 27 ° and 30 °!
To conclude the delivery was quick and neat :)
Thank you.
Musyanon.