OK, here's my question. So i've owned an older White's, a Garrett Ace 250, and a Fisher F5. I had fun with all 3 of these detectors and found lots of junk, but also a few things of value. This being said I always find myself coming back to metal detecting. Last year, just as I was really "getting to know" the F5, I was laid off and had to part with it. But now i'm ready to get back in the game. This time though I want to keep it simple. I know Tesoro has some great machines and i'm by no means a "brand loyal" person which is evident by the last 3 machines i've owned. Anyways, my first thought was keep it super simple and just go with the Compadre. But then I started looking at the Silver Umax???? The other thing, what is the real significance of the operating frequency??? I know my Ace250 was at 6kHz, and the F5 was at 7.8kHz. And now looking at the Tesoro it looks like the Compadre is at 12kHz and the Silver Umax is at 10kHz. I'm not a real tech savvy individual, but I am curious how the higher frequencies relate to different applications? Anyways, back to my decision. Should I stick with the Compadre or go with the Silver Umax? Every detector i've ever owned, I have used a "sniper", or smaller coil as my main coil since i'm usually hunting around old houses, foundations, tot lots, etc. where there's a lot of trash. Any help would be appreciated.