I don't know anything about the quality of their compressors but the quieter they are the more they cost.
If you want real quiet then get a Badger Million Air or Silentaire 20A as they are both in the 30 dB range which is really quiet.
They do however cost around $400 each.
Mike
“Wisdom is the right use of knowledge. To know is not
to be wise. Many men know a great deal, and are all the greater fools
for it. There is no fool so great a fool as a knowing fool. But to know
how to use knowledge is to have wisdom. " Charles Spurgeon