Actually, I have used every golden and royal sabre that Tesoro has produced. I have been using Tesoros since 1989 faithfully. My absolute fav is the Golden Sabre Plus, absolutely love em, have 2 of em. Royal is an excellent machine in its own right - very crisp target id and a nice, stable coin detecting machine and is great on nickels like Tesoros usually are.
I have owned a Golden uMax too - I'm sorry, but I feel that this machine is very overrated. I will give my reasons below:
1. Fixed and non-changeable notch - you cannot notch out what you want, it is preset to notch pulltabs. And where do a lot of the best rings fall - pulltabs range.
2. Tones are not changeable - they picked like 600 Hz for the high tone (coins), and like 400, 450, and 500 Hz for the other three tones(iron, tabs, nickels). Good luck telling the differences between tones #1,2, and 3. The only 1 I could tell consistently was the highest one - and I would say that my ears are pretty good - Tesoro's choice of audio frequencies
just made this a chore
.
3. Detector hit equally hard on all most trash targets - again I had a lot of trouble telling a nickel from small foil or can slaw by audio signal strength - not by tone mind you - that point I addressed in Item #2.
4. Iron picks up too well, even at a disc setting well above iron - you are forced to push the disc even higher to knock out the chirpy iron hits.
Depth ability was decent but not great, and the weight of the uMax machines is just fabulous - but other than that I just didn't enjoy the machine.
I know there are users out there and for their own reasons absolutely love the Golden UMax - but for me it just didn't jibe. I wish Tesoro would just adopt the Golden Sabre Plus or
Golden Sabre II design for the notch and tones - which has just two easily distinguishable tones with fully adjustable notch - plus the notch reject, accept, or off switch. If they put this notch design into a Vaquero or Tejon circuit, you would have one hell of a great machine. So, come on Tesoro - make 1 like this so I don't have to make the mods myself and void my warranty in the process!!!
Aside from my tangent discussion, I feel that your Royal does not have any of the 4 issues I have found with the Golden - so I would stick with it. You may want to consider getting another older Tesoro as a secondary machine though. My recommendations are the Golden Sabre Plus (first) and Golden Sabre II (second) - they are just as good as the Royal I feel. There are some other notching/id machines that Tesoro has made such as the Pantera (circa 1991) that I have heard good reviews about, but have not yet had the experience to use.
Anyway, this is my two cents, i hope it helps you decide what's best for you.
Mark