Quick comparison between:

Minelab GO-FIND 40
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Tesoro Silver uMax


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Minelab GO-FIND 40
Tesoro Silver uMax
Feature comparison between Minelab GO-FIND 40 and Tesoro Silver uMax
Options Minelab GO-FIND 40 Tesoro Silver uMax
Detector Type Coin and Relic Detector Coin and Relic Detector
Price $230 $250
Manufactured in 2015 1997
Battery Type 4 AA 9V
Weight (Lbs.) 2.3 2.2
Operating frequency 7.7 kHz. 10 kHz.
Display Yes None
Backlight Yes No
Target ID Target Icons + LED Lights Audio
Tone ID 3 Tones Single Tone
Search Modes
  • 3 Search Modes.
  • All Metal
  • Discriminate
Ability to change coils Yes Yes
Ground balance Auto Auto Preset
Waterproof Coil only Coil only
Warranty 2 Years Lifetime
Number of Reviews graph 1
graph 1
graph 58
graph 1
graph 1
Avg. User Rating 3.00 4.95
Avg. Durability Rating 1.50 5.00
Avg. Ease of Use Rating 5.00 5.00
Avg. Depth Rating
Depth value
Depth value

Most helpful review for Minelab GO-FIND 40

Go find 40
Flimsy, and my ace 150 beats it on depth the go find 20 can only be worse.
Steve from Scotland

Thumbs up! 3
Read all reviews for Minelab GO-FIND 40

Most helpful review for Tesoro Silver uMax

Silver uMax -- Can't Beat It
I have been detecting for several years and have used several different detectors. My main interests are parks and swimming holes. However, I am rarely out in the open without a detector attached to my arm. The Tesoro Silver uMax gives crisp clear signals and responds to items that are quite deep in the ground.

The discrimination circuit is rock solid and can be used to ID targets. One of my favorite finds with the Silver uMax was a Canadian silver five cent piece dug from about 10 inches. It had holes drilled in the sides, so must have been part of a jewelry piece. To be honest, almost all my great finds have come from the Silver uMax. It has found gold and silver 'a plenty. It is easy to use.

When I am ready to detect, I turn one knob and start working. The detector performs very well in most conditions. The only place it gives me a little trouble is in highly mineralized areas. I tried using it at a swimming beach on the banks of the Columbia River, and it was erratic due to the black sand. If you need something that will give the same admirable performance as the Silver uMax, but can handle a wider variety of ground, you might try the Vaquero. I have used a Lobo a lot too, but am addicted to the lightweight ergonomic design of the uMax models. They are really a pleasure to use.

Other detectors I have owned or own:
Minelab Sovereign Elite (great, but heavy)
Minelab Excaliber (waterproof Sovereign)
Minelab xTerra 705 (love it, very versatile)
Minelab Musketeer (great, but heavy)
Minelab Explorer (FBS good, but not that good)
Tesoro Lobo Super Traq (a favorite)
Tesoro Diablo (no discrimination)
Tesoro Bandido (o.k.)
Tesoro Compadre (good for wife and kids)
White's MXT (good machine, but bulky)
White's Classic 5 (good machine, but bulky)
Fisher 1212X (wonderful detector)
Fisher Gold Bug (no discrimination)
Garret Ace 250 (not so great)
Garret GTA 350 (not so great)

Overall, Tesoro and Minelab are my favorite.
Tom from Idaho Falls, ID

Thumbs up! 97
Read all reviews for Tesoro Silver uMax