Ex2: depending on the flow/vibe of the dance floor, i use the 3rd/4th deck to load tracks I know will keep the energy going the second it comes to mind, in the moment. This is where it pays off to make sure your file management/beat grids are tight. I say that to say this, IMHO, these examples are justification to feel ok about using sync. Beat matching is easy. Sync in this case, frees up your brian to be more creative on the fly. DJ Threads