I don’t see why you would buy a pair of SC5000’s for Traktor HiD. You degrade your sound quality by such a huge amount doing that. Traktor’s key-lock algorithm destroys sound quality (especially high end), while the Denon players sound awesome up to 25% speed difference.
And my guess is you will also hear the difference whitout key-lock, because Traktor’s internal sound engine is crap, and got even worse when they went multicore (all versions after 2.6.8). On top of that, USB will most likely interfere with your sound quality (long story, google it). If you have a good mixer, ok speakers and a couple of decent ears you will hear this instantly when AB testing with stand alone players. Gets even worse when you AB test it on bigger sound systems.
I basically always wondered why my sets sounded so muddy compared to the CDJ’s before or after me. Traktor is why. That’s why i bought a pair of SC5000’s. And that’s why i don’t care about HiD. Hopefully NI will fix things a bit when they’ll redo the software from scratch, which they announced. Probably still won’t fix the problems they can not solve (like USB port quality).
Just buy the SC5000’s @sussudio. And stop using Traktor. Switching is super easy and fast. And as a bonus you won’t be looking at a laptop screen anymore during your sets. Which makes DJ’ing a lot more fun.