One does not need a Minelab or other brand top line detector to get all of the notching cabilities! With an older machine if you discriminated out the pull-tab everything below it was eliminated also! On a previous post, there was a comment that the Minelab with notch features will eliminate the pull tab but still see the nickels and gold rings! Basically it was hard for him to understand why someone would use a non-notching machine! I can use, say an old Garrett VLF/TR or a motion machine with no meter or audio discrimination and do the same thing! All detectors with discrimination have fall out points! I will benchtest it and find out where these are! The nickel will fall out before the pulltab, the pulltab before the screwcap, the screwcap before the dime or quarter! Out in the field, I start out with low discrimination, I make sure that I can detect a nickel. Once I receive a target, I dial up to the next point to see if the nickel falls out then the pulltab, etc.! This way I hear all the targets and I determine whether to dig or not! This way if I only want nickel and higher coin readings then this is all that I have to do! Of course, this is time consuming and it is just easier to dig the target! I like the the top of the line , Minelabs, Garretts, Whites, etcl but sometimes they are not necessary or really the right one for the job, For more details see my post about 5 pages back!............................................................................GOD BLESS..................Joe