I agree, I have done very well with the Multi Kruzer and when I had the Gold Racer that too did very well in bad ground. Here in the North East we have tons of iron trash and much of it is small enough that most machines will simply mask out and the operator is often just unaware. This is where concentric coils come into play and why I have done so well with my Tejon. Recently I got the 9" concentric for my MK so I can hunt areas along rivers as the Tejon is not waterproof.