I just quickly skimmed through every1's posts and coming from another vinyl dj, I'm like cupe and have no idea how the sync works, dont really care much for it either, I learnt on vinyl and had access to cdj's at a friends place back in the day so got to experience on them, never used a controller, my own personal opinion is there are no pros for sync mode, if you can't mix it normally, then don't do it, but that's just me