Reply to Buy S4 now or wait (& pay reg price)

Getting back into DJing after being years off from vinyl. Looking into a controller so I can focus on mixing rather than the scratching I used to do. Need an all-in-one due to space issues and just for home use.

I am strongly interested in the S4 since I want to use Traktor. Should I buy now with the $599 price drop? Is this a good price?

I'm worried I will kick myself IF a new one comes out but I'm not sure if I can push myself to pay $899 reg price.

I also have an Ecler Hak 380 that I may sell and use those for studio monitors (krk rockit 5s or 6). I need speakers. That's only if I can sell the mixer. I have TMA-1s that I can use for the time being or just buy cheap computer speakers.

Any input is appreciated.