You can't pick a dj by a play list..
Your venue maybe a bit on the modern side of things and the dj's last 2 sets were on the oldies side.. but he may have excellant modern records but you are judging him on hes last sets.. where if you see him dj at a venue that you have chosen to go to, as its your type of music being played. you will appreciate what he is playing..
Also by using thier playlist... maybe the dj has turned up with hes biggest box of unknown cover ups rarest of the rare - the dj before never had anyone dancing no atmaspphere so he plays one rare record the floor still dead so he puts on some classic motown stuff, to get the floor going and build up the room.. you will see hes playlist and think blimey same old same old..
but know the dj's worked hard done a good turn in the room gone home with the hump cause he wanted to spin hes new big sounds and can't..
no to pick a dj you have to hear them...
and more to the point he or she maybe ugly.. no one wants to look at an ugly face when they aren't dancing... because some one booked the wrong dj for the venue by using an old playlist