I am 64 and use a Swingy Thingy type support device. The detector is balanced to the point that it is very easy to use the machine all day, for me anyway, with no problems. All of the top brands with the more desirable features are a little heavy if they have a display, tone ID, and the like. I have tried the Switngy Thingy on many of these detectors and they can all be balanced to the point that they swing very easy putting the weight on the users shoulders and back. With that in mind the weight is really not noticeable at all in my opinion.
One reason why I seem to always have an Explorer in hand is discrimination at depth and the number of notches for discrimination. We can select from 1024 notches in any combination. I think the next best machine has 191 notches. This plus the two axis display, only one on the market, for ferrous and conductive content of metal is a very real technology advantage compared to going by the conductivity of the target as all other hobby detector do. This in my opinion is a tremendous advantage when we consider all the iron that we may need to hunt in. Also, the Explorer has almost no response to soil minerals due to the time domain method of rejecting soil minerals.