Maybe it's just the way they've all been recorded, but I'm struck at how much noise the Chinese water cooled spindles still seem to put out in some of the youtube videos folks have uploaded ! (perhaps it's just the microphone being too close to the cutter - but for example - http://www.youtube.com/watch?v=2OZCv...eature=related (2m16 in) ...or maybe the acoustic vibration/whine of the spindle is being amplified by the machine frame?