I have been looking into the Nexus 2000 and the Denon SC-2900s. I have an s4 but want to learn cdjs as well. I will say the Denon have a lot of features. I have never met anyone with them though. I can get 2 Denon SC-2900s for $1600. That would be equal to one Nexus 2000. There are some things like ReKord buddy. Since I use traktor I can go to Recordbox easily if I go with the Nexus. Using engine I would half to do twice the work. Though if I went Will’s route and got the mixer as well It would still be $600 cheaper.