What is your best recommendation for a DJ system to use in combination with this unit?

We recommend you connect the product to TORAIZ SP-16.
By connecting the two with a MIDI cable, you will be able to trigger the TORAIZ AS-1 using the performance pads and step sequencer on the TORAIZ SP-16. A MIDI clock also lets you stay in sync.
*We recommend you update the TORAIZ SP-16 to the latest firmware when connecting the two.