The H240-X2 is the last in the line to be released. You will see reviews soon enough.
Check some more reviews. Tweak Town's numbers seem to be skewed when certain manufacturers are involved. If you would actually like to know what a Swiftech sounds like next to a Corsair....just go straight to 9:35 - https://www.youtube.com/watch?v=MjmlVs974tQ
That was using Swiftech's Helix fans, which are the loudest of the fans they use on the X2 series.