I tried the 8" and 6" Concentric coils on the Mojave, and worked the new 7" coil on my original Bandido, Bandido II [size=small]micro[/size]MAX and Silver Sabre [size=small]micro[/size]MAX units. I used them for traditional Coin & Jewelry Hunting in all the typical urban environments, as well as close to metal fences and structures in playgrounds and building tear-down sites. They also were worked in a few non-urban Relic Hunting sites, both ghost towns and old encampment and recreations sites.
After a bunch of coil and lower-rod swapping at many different evaluation sites, I came to the following conclusions:
[size=small]►[/size] If, [size=small](and this really doesn't fit me)[/size] I was limited to ONLY one Tesoro and ONLY one search coil, it would be a general-use Tesoro model [size=small](5-pin)[/size] and my choice would probably be their new 'Precision' 7 Inch Concentric coil.
[size=small]►[/size] I like the 'feel' of the new 7" coil better than the 8" round 'donut' coil, and the 7" Concentric provided very close/similar depth and performance as the 8" coil.
[size=small]►[/size] In the end, I decided to keep two spare search coils on lower rods: I have the 8X11 DD for my 4-pin Vaquero, and a white-colored 8" donut for my 'general-purpose' 5-pin models for hunting more open sites with limited trash where I can use more coverage and slightly better depth of detection. Always mounted for grab-and-go readiness I keep a 6" Concentric coil on my Vaquero, Bandido II µMAX and Silver Sabre µMAX, and concluded I got the best useful performance from the new 'Precision' 7" Concentric on the Mojave.
Since I am not limited to just one Tesoro, I have the option of tailoring the best coil for general performance to each model and, after ample field time in a variety of sites, the 7" just seemed to be the ideal ticket for the also new Mojave.
Monte