Just how quiet really are the water cooled spindles?

[HankMcSpank]

Now I realise quantifying how loud something is is a subjective thing, but I'm just wondering for those that have or have seen the water cooled spindles used in anger, how quiet they are?

The few youtube videos I've seen seem loud! (but then again if the mic is very close...it will be.

So at the lower end of their revs....are they very quiet or still loud but just 'quiet' compared to their air cooled peers?!!

I have neighbours, (no garage, no shed....my loft is my workshop!) ......and they've a baby, so everything I buy is with a view to how noisy it's gonna be and how p1ssed they're gonna get by me CNC'ing!

I'm looking at buying a machine that already comes with an 800W water cooled spindle fitted.