I keep my old Royal Sabre around that I purchased from another guy and use it in high trash areas. Such was the case today-but I ventured from the trashy sidelines of an old football field now used by joggers back onto the playing field surface that I had previously hunted with my Silver umax and Garrett Ace. Much to my surprise coins-and they had been there a while, judging by the yuck on them-started popping out everywhere. My question is: even though the Royal is older technology (or is it?), do I have a better machine than I thought-is it's circuitry and such better than the Silver umax, for instance? Thanks.