I got a Shark DSX-10 slip-on exhaust for my Scrambler and installed it today. Quality seems good and it fit really well. Pretty easy installation.
And the sound! I remember I thought the Scrambler sounded pretty good when I first got it (compared to the Kawasaki ER-6n I had at the time) but this really takes it to the next level. Looks good too. Here's a couple of pictures.