I have been looking at the same muffler too.
It says that its a straight-through design so I dont expect it to be much quiter than straight pipes, but that is exactly what I am looking for.
No drone concerns here, since it will be spending most of the time >3k rpm.
Please post your findings once you buy it, since I will be buying one in a couple weeks too. Maybe a set of secondary cat deletes too (vertex auto has them for $275)
Yep, Im cheap.