let me weigh in on this . i had torq and i just could not get use to it not playing when i hit play, its a split second pause. they told me it was my pc and the amd pro. i needed more memory so i jus gave it away. left a bitter taste in my mouth. two years later borrowed a friend serato just to see on the same pc and it worked jus like my cdj's. i didnt even ajust the buffer or anything, it a dream. i was sold bought one the next day . tractor and mixvibbs mite be good i could'n tell you, but serato is GREAT as far as i know. don't buy into the hype that you need a mac either. i'm using vista home basic and one gig of mem. just needed to turn off virus protection when spinning. everybody can't be wrong