Dancer
Well-known member
Both entry level machines ($250) I own both, and each has served me well. Simple air test, machine lay on Metal free surface. First the screen type, with stock 9" coil. With full sensitivity, all metal. This machine strained to get a quarter at six & a half to a shaky 7" Dropped an inch with added discrimination.
Beep & Dig model, 7" coil, 2 knobs. Sensitivity cranked, zero discrimination. Squeezed out a quarter very close but not quite 8". Add discrimination, depth starts dropping. My test at least a inch dropped with minimal discrimination. Not comparing brands, just my two different type machines. So pretty much what everyone else has tested too. Not written in stone, but with my two machines, they both were deepest in all metal no discrimination. The B & D slightly smaller coil went a little deeper. Just needed something to do with bad weather and all. Learned a little on my own.
Beep & Dig model, 7" coil, 2 knobs. Sensitivity cranked, zero discrimination. Squeezed out a quarter very close but not quite 8". Add discrimination, depth starts dropping. My test at least a inch dropped with minimal discrimination. Not comparing brands, just my two different type machines. So pretty much what everyone else has tested too. Not written in stone, but with my two machines, they both were deepest in all metal no discrimination. The B & D slightly smaller coil went a little deeper. Just needed something to do with bad weather and all. Learned a little on my own.