Here's some pics of the AEP version. I have yet to try it, so I can't comment if it is better, worse, or no difference than the STS-type of supressor.

The slow-mo video was impressive. Because the two rubber 'nubs' that take the hit of the string are not directly inline with the mounting rod, they flex quite a bit upon impact absorbing a LOT of the energy after the nock clears the string.

There is a set screw to adjust for length. Since not all strings are directly behind a stab hole in the riser, the mounting nut that holds the rod assembly is at a 1* angle. This lets you rotate theassembly until the rubber head is lined up with the string, then you tighten it into the riser.

I'm not endorsing this thing yet since I haven't got a chance to try it- but just offering it up as another option for people to check out.