Having spent the better part of the last two decades writing up field tests on metal detectors, I have had the opportunity to use a lot of machines.  Due to publishing deadlines, timing of receiving the unit, testing/learning the detector and a lot of behind-the-scenes tasks required to get a field test published, it is not the gravy train that a lot of folks think it is.  Yes, it can be fun, but it is work.  The toughest part on rare occasions was to not have the time to really flush out a new