I use reaktor 4 in Logic6 as an audio unit. It is really quarky. If I record a track in logic with a complex bassline using reaktor, sometimes the reaktor synth will not play all of the notes. Now it doesn't happen all of the time...just occasionally. So i'm left with a bassline and an occasional missed note...very strange. So i just use reaktor4 for chill synth lines or atmospheres. For that it is really nice.