Stoof-tabsallday said:
...Well the concentric won't handle mineralization as well as the DD widescan because of its "viewing area".
The DD only "sees" the blade where the two D's intersect and from tip to back. The concentric "sees in a cone from the outside of the coil and inward in an upside down cone. Makes it great for pinpointing bit affected more by mineralization because it "sees" a larger volume of ground at any one time. ...
Understood. For a larger coil used in less trash, the 11x8 widescan would be the choice in my soil over the 9x8 concentric; I have both. We're talking a relatively small coil though, which sees less ground to start with.
So many folks seem to prefer the small concentrics to the small widescans on Tesoros, that I wanted to give one a workout on my H.O.T. machines and the older 5 pin machines (my Eldos). Tesoro apparantly thinks the concentrics work best on their 5 pin machines too (or sell best), as they don't even offer the widescan 5.75 in 5 pin.
I think that Tesoro user "Monte" has written that he prefers the 5.75" concentrics to the widescan, everywhere. Anyway, I'll have one of each to play with and post my thoughts after comparing them on the same Vaquero. ^_^