i have both those detectors and like both of them, the TR is a great coin detector, so is the Tesoro, where the TR cannot match the Tesoro is on lower conducting metals. the analog discriminator has allot more adjustment than the notch on the TR. the TR has 4 tones with no expression and the Tesoro has one tone with many many different expressions. not saying you cannot find jewelry with the time ranger, but take a great chance with it,on going over those targets. unless you run it in the all metal, because of the notch you will, miss allot of good targets. the land star has a adjustable analog discriminator and would be a little better for jewelry i believe over the TR. I compared the TR and the Cortes, The Cortes is more sensitive to small jewelry than the TR. and the discriminator on the Cortes is allot more adjustable or accurate than the discriminator on the land star also. detectors i have at this time are the time ranger, land star, Cortes, vaquero, tejon, sand shark.