I currently use a pair of Aquacomputer Shoggy Sandwiches to quash the noise from my 2 ddc pumps and whilst they're excellent, they are rather bulky. They add approx 30mm to the height of my XSPC dual pump res. I'm looking to downsize my case and still squeeze in a dual loop, so the Shoggys may have to go. Has anyone used pump decouplers? How effective did you find them? Have you used something else that's compact and quiet?