Nenad i am using a 3500 at the moment and are using a 14 coiltek A.I. coil on it with lithium battery and spo1, have found it to be a good combo first targets were shooty pellets and small gold the other day got a 2 gram at 9 inches . :Y:
the first 2200 green was a model released on its own a very good detector the blue 2100 was released around the time the 3500 were released the blue 2100 was a cheaper detector i do not think i had as much punch as the older green 2100 or 2200 much the same as the 4800 regards john :)