Reply to Kontrol S4 + Midifighter or Numark NS7

What would you choose? I mean im getting either one. I'm currently using the Traktor pro software only. But i can get used to any software in like 1 -2 weeks. I like the feel of the NS7 cause i tried it out today. But, i notice it doesnt have a filter knob? Unless i didnt see it. So what are your thoughts? thanks guys.