MF is a big advantage inland for coin/relic hunters like myself your not second guessing what KHz to set your machine, you can put it in a 24/4 40/4KHz program and walk the fields without the worry your missing small/deep targets,
I am working Roman/medieval sites and it's performing very very well around iron in MF modes,
Waterproof is a big advantage for me i am always tweaking on the fly to keep the machine stable i like to run my machines hot with the D1 i have to pocket the control unit in the rain,
When i go on holiday i like to have a few hours a day on the beach at the end of the day it's a great allrounder that suites everyone's needs.