Kreissieg hasn't come out with much in like a year, but I do remember seeing pics of an Aventador at their shop months ago so I am sure they are working on something.
I think the Power Craft is the best sounding exhaust currently available. I like how the system significantly reduces the artifical raspy, gruff sound the stock system makes and produces a cleaner higher pitch sound. The other exhausts on the market ie. Tubi, Capistro, LNB, iPE etc. don't really change the sound like the Power Craft, they are just louder variations of the stock sound.
The Power Craft is valved, also in the video I believe that Aventador is using straight pipes.