they are basicly the same, just that the quiet edition does not have pwm control and run slower out of the box. on a radiator do not go for airflow fan as they lack static preasure to push/drag air through the radiator.
The idle temp for my loop whit one 360mm radiator is
CPU Intel core i7- 6850k at. 4100MHz :34°c
GPU nvidia 1080(stock) :37°c
So I would not wurry if the blocks weren't seated properly you would see temp much higher
Full stress test CPU:62°c. GPU:55°c.