Hiya "superfish" --
"Noise" not necessarily just a matter of what skimmer to get...
Type pumps, overflows, etc...all play a much larger role.
Often hard to tell till you get all assembled...
Maybe not what you wanted to hear...but sorting out the myriad of "options" is a big part of this "art"...
I am very "partial" to my AquaC -
Biggest noise reduction I wish I had made was spending couple extra bucks more for the "quietest" cooling fans on the market...
Good luck,
OmarD