what difference bettween VD Audition and Davis

please tell me what difference bettween Virtual dynamics audition Power cord and Davis.They are look like.price is near.
If I remember correctly the David cable took over for the Audition. The David line was made to give you 75% performance of the Nite2 at a much lower cost than the Nite2.I just went from David to Nite 2 and the difference is very noticable in my system. Unfortunately small improvements cost more money...Thats Audio!!!!