Air tests is
and
I will just say this and its just me,
First and foremost the detector you enjoy using and understand will find you the most.
I spent half the money or a third depending what you compare, for something that has the features I like and at this point i still haven’t run out of holes to dig.
Will spending two to three times the amount of money find you that one target maybe you or others missed? I suppose thats part of the thrill of spending more for something with comparable features.
The phrase “ the __ metal detector found stuff others missed “ has been repeated for years, and I suspect will continue every time a new detector is made.
To each his own, my point swing what you enjoy unless you are
doing it for a living and and your paycheck depends on it.