The Compadre is not known for being very deep but it does OK. I've found quarters in the wood chipped tot lots as deep as about 7 inches with the Compadre that I have.
It is a single beep, but the edges of the tone, smoothness or chirpiness all express information that you learn to read as you get familiar with it.
Instead of the display telling you what the detector thinks a target might be (like on the landstar) with the Compadre, you can use your thumb to gradually turn the discriminator knob to see where the target starts to be discriminated out. It is very repeatable on coins and, with practice, you can tell zinc pennies from copper ones and what other targets are likely to be coins. Once you know the depth range you are getting in the ground you are working you can get a good feeling of how deep a target is by slowly raising the coil as you sweep and see where the target disappears. Raising the coil also helps pin point more accurately as you see the target location narrow to the center of the coil. Don't really need an ID or depth meter if you use some different techniques with the Compadre.
One day I was a bit under the weather but wanted to get out, so I grabbed the Compadre (since it is so easy to swing) and went to the local play ground. Started walking, dug an unfired .22 bullet, a little junk, then hit that zinc penny reading. Dug it anyway and was pleased to be holding a pretty nice looking Indian Head Penny.
The discrimination on the Compadre is very clean. Once set to ignore iron, even very big iron is gone from detection. The same is not true with many higher performance detectors. It is a little gem of a detector; even though I would not say it is deep.
Since you are also asking about the Bandido II, while I like and am keeping the Compadre, I also have other detectors that have ground balance, sensitivity, threshold and discrimination adjustments that get most of the detecting time because they can be set to get the best use of the detector for the ground conditions. The Bandido II has those adjustments. There are a lot of detectors on the market that do. From Tesoro, the later Bandido's the Eldorado, the Vaquero, the Tejon all have the adjustabilty that I like to have available. None of those have a meter like the landstar.
While I do agree that it is hard to go wrong with one of the Tesoros, you also need to consider how much you will spend and what features are really important to you. I am kind of fond of the single tone "beep and dig" type of detector, but I do have a couple with meters too.
Cheers,
tvr
Oh; the Compadre Indian: