The only Tesoro,s I ever owned is the Tejon and I am on my second one now. So I can't really say it is better than the others.
Fist thing that got my attention was the trigger toggle and then the duel disc. Now back in the day I was running Fishers 1265x and 1266x which just happened to have the same setup and I loved those machines. So that was why I settled on the Tejon.
Both of the Tejon's I have had the disc control are the most accurate I have ever used.
The Tejon I think kind of got a bad start because at one time you could go to the Tesoro web page and they had pictures next to each model of machine and the Tejon's picture was relics. So it took on that it was primarily a relic machine. But if people would have read the story for the Tejon it went something like, the Tejon was designed and built from the ground up for coin and relic hunting.
Another thing I have noticed people get turned off when they find out it runs on 8 AA batteries. Nobody wants keep feeding it batteries, but I got 8 rechargeable and they are still going after 2 years of use. I run rechargeable batteries in all my detectors.
Now I am a coin hunter and the depth I am getting is better than any machine I have ever owned. So day I try one of the big boy coils and see how it does on coins, my biggest coil now is the 11x8 and it really does a good job. It kind sounds like a big coil but when I checked some of the other machines stock coil of 11"DD, they are about the same size as the 11x8.
For me I don't see the need to have one of each model of Tesoro's when I can set the Tejon up to do about the same thing.
The Tejon shines for me,
Ron in WV