Minelab Vanquish or SIMPLEX. Metal Detecting Beach why multi iq is best

Metal Detecting Beach Minelab Vanquish and Nokta Simplex which is Best for metal detecting on a beach with Black Sand Which detector performs the best the Minelab Vanquish 540 with Multi IQ or the Single Frequency Simplex + metal detecting on the black sand beach. This is a very tricky beach to detect on mineralized ground & deep buried iron SUBSCRIBE http://bit.ly/2VcUX0q #minelabvanquish #NOKTAsimplex+ #metaldetectinguk