The problem with many editing (sequencer) possibilities in the Technics keyboards is that you can only edit individual notes, or ranges of measures. Its the same with this advance/delay function. If I want to record a piano in the sequencer with real-time record. And I want to have a vivid sound, I do not use the quantize function. This is usefull if you want a piano track as background accompaniment (timing is then more important than a natural sound). But if I doesn't want to use the quantize option, I sometimes still wish to replace some groups of notes (most of the time about a quarter or less of a measure). If you want to do this with a very long track it is very time consuming, and the advance/delay function is not really a good option.

I too agree with Scottyee about timing resolution. I always wondered why my piano playing with realtime record doesn't sounds natural any more (I didn't remembered to be that bad a piano player). The 96ppq is offcourse the answer. I usually dicide then to record twice as fast. For example if the music must be played at 60bpm, I select 120bpm in my technics. And then record all over again. At least you have 192ppq then. It usually resolves much of the problem. But you have to record al your tracks again, to adjust them to the new tempo as well. It is an option, but if technics changed the timing resolution, that would result in much more natural recordings. Especially with slow recordings (somewhere beneath 70 bpm).