I have been used a tesoro dingo its okay.But i want a detector with extra depth. I have gpx 4500 in disciminator mode it just blanks out for to long a area when you pass over junk ,it is impossibleto dig everthing.Thats why i was asking about a t2Keppy said:If you are gold prospecting looking for gold nuggets you do not use any discrimination if you do i don't think you will find any gold.