Howdy! Several years ago I bought a Classic 3SL from Monte with the M-B's mods and I love this detector! Mine has a toggle to switch the auto re-tune to a very slow re-tune and it will let me hover over the target a lot longer before the signal dies.It makes pinpointing very easy even though it pinpoints easy enough in disc mode anyway.Setting it up in Black Sand mode and min or no disc is the way to go with this machine.It handles mineral ground extremely well and hits the low conductors a lot better.I used the black sand mode to go over places I have already been before and found good low conductors with ease that I missed with the switch in normal mode and low disc. This detector has been under rated for a long time but now I'm glad that more people are starting to give it another chance especially with the Mr Bill's Mods.When I bought mine from Monte I also bought a 5.5 high energy ferrett coil to use on it 6.59KHZ and it is killer around iron and trash.It pinpoints dead on and can get in between trash to pick out goodies with no problem.That coil gets just about the same depth as the stock 9.5.There are also lots of coils to choose from for the C3SL.The depth is also top notch with this setup in my ground. The balance can't be beat with smaller coils.I can hunt all day without my arm falling off.The battery life is also the best there is.About 80 hrs with headphones and maybe 50 to 70 without. I don't have any trouble finding small jewelery or nickels.I found a nice silver dime and wartime nickels where other machines have been over before while I was using the C3SL modified.The external GB makes a world of difference. It's a great all around machine,easy to setup,lots of coil options,quality built,and great clear audio.Give it try and see for yourself.
Ronk
Ronk