Let me understand this......you're more interested in looks and sound vs. performance, correct?
I haven't heard the Klockwerks but I got to see them on several of his bikes at the Drag Specialties trade show (for dealers only) up in Reno last month. I have to say, that was a good looking exhaust sytem and based on nothing else but looks, that system would be at the top of my list.

Slash forward.....is that where they follow the lines of the back of the saddle bags? I like that also......a lot. If I hadn't stayed with stock exhaust (and Fullsack baffles) I'd have to go with an exhaust that follows the lines of the saddle bags, too.
Again, my primary goal was to have it run as cool as possible, while gaining whatever performance I could as secondary. The sound would come last for me. The fact that I only had to change baffles and save a bucket load of $$ was an added benafit.
I know some of you may find it hard to believe but cost has been a deciding factor on all my performance mods. The only changes in regards to performance were the TTS tuner, Fullsac baffles, Fueling cams and a dyno tune. I really got off pretty cheap considering what my dyno sheet looks like.