I honestly don't know much about the Jardine.
is neither particularly loud nor is it exceptionally quiet. They sound OK to me, and are supposed to pass AMA sound tests when the packing is healthy.
I've never had a problem keeping my pants off the header, ALTHOUGH there is one little thing you should be aware of. The DRD header is drooped at the front to accommodate the company's radiator lowering kit, and on most bikes, it drops just low enough to interfere with removing the front oil filter
One solution is to loosen (not remove) the header each time you service the filter so you can pulll it up out of the way (it doesn't take much), or you can do as I did and substitute a stud and nut for the front bolt.
This was true of the exhaust
made two years ago, th efirst of the second generation cans with the long end cones. It's possible that this may have been corrected on current models. In looking at the header, it really would take very little to get it to clear.