The 12025mbk and 12025hbk are noisy in my opinion :| they're in my loud category, the 12038hbk sounds better than the two of them 25ers.

I have 4 categories

1.Deafening loud(panaflow UH, uk3)
2.Loud(koolance fans)
3.Quiet(Gentle typhoons)
4.No-sound no cfm (never tried those 1600s)