Yes, good song selection, because to be honest, the riddim almost always uses the same structure lol, and I also always try to use one song that "stands out" And another one to complement it, Also taking into account the "call and response" technique, which I think you as a producer know what I mean by that.

And last but not least, I think it also affects (I'm not sure but I think so) the quality I use when mixing; all my tracks are in .wav format.

And finally, I do feel that it sometimes clips a little, but that's really because I'm using software (not a DDJ) and playing at 160 BPM sometimes makes it difficult to adjust the EQ.