if you adjust the Denon's price upward to include the full version of Serato DJ).In the end, I went for the S4's tight integration with Traktor Pro, the possibility of exploring Traktor DJ/iPad integration, it's size/layout, and, to a lesser extent, it's remix capabilities and RGB hotcue buttons (nice touch, but not a deal maker/breaker)

If there simply were real analog mixing taking place inside the unit I would give it 4 stars, and if it had solid plastic buttons for play/cue I'd consider giving it 5.

As far as the performance pads go, the top 4 buttons are play/stop buttons for remix decks and 'fast forward

I thought the buttons would be more responsive and made of a harder type of rubber.