Pioneer's CDJ-2000 took the spot at the top of the firm's CD turntable range a couple of years back, and has enjoyed a decent spell as the club standard. To ensure that its reign continues unchallenged, a new iteration in the form of the CDJ-2000nexus (no relation) has just been announced. The vast majority of the DNA remains the same, but there are some key new features such as WiFi (as we saw in