What is the best 140 mm fan for silent water cooling ?

1.

**Be quiet! Pure Wings 2 - 140 - 1600rpm High**

2. be quiet! Pure Wings 2 140mm

2. be quiet! Pure Wings 2 140mm

3.

**be quiet! Shadow Wings 2 140mm**

4. Bundle - 9x Noiseblocker BlackSilentPRO PK3 - 140mm (1700 rpm)

4. Bundle - 9x Noiseblocker BlackSilentPRO PK3 - 140mm (1700 rpm)

5. Bundle - 9x Noiseblocker NB-eLoop B14-PS Bionic Fan - 140mm PWM (300-1200 rpm) |

6.

**SilenX Effizio - 140 mm - 12 dBa**

7. Noctua NF-P14s redux-1200 140x140x25

8. Thermaltake Riing 14 LED RGB (140x140x25mm)

I think Silen Effizio - 140 mm is the best choice or probably Shadow Wings 2...