Official comment
The RCA outs are unbalanced, single-ended by definition, which should produce superior frequency response, phasing, and transients to balanced XLR/TRS in most cases. Balanced, while it does have the utility of a larger hypothetical total dynamic range due to its higher output and higher receiving input at the differential opamp, is difficult to match properly the + and - components reliably, repeatedly, and staying so closely matched over time. This can be seen over a scope. Balanced is intended for long runs and/or around a great deal of EMI/RFI interference, not as inherently superior sounding in most cases. It's built to reject interference when that is needed, but there's a reason unbalanced is the preferred connection route on short runs.
As for your particular needs, that really comes down to the equipment you're piping the DJM into, the levels it wants, and how long you're running these cables. There are output settings under the utility for the mixer to change the post-knob output levels. There are a variety of outputs for you to choose from. And you also have the option of getting some y-splitters and adapters if you need more outputs from one particular pair that is more suitable for sending to multiple gear than some other that might be the wrong connection type or level no matter what you do.
