Not sure what coils you have coming with it. I have an Advantage with 3 coils...the 7.5 inch, 10 inch and 15 inch WOT and each one serves it's purpose.
One thing you may want to do when you get enough funds is to get a straight shaft for it. The stock shaft configuration is heavy and not very well balanced in my opinion.
If you are copper or silver coin hunting, you can turn the discrimination up and the Advantage does not loose any depth. You will miss nickels and most gold, but if you want to cherry pick in trashy areas with the small coil, running the discrimination all the way up will have you digging coins and not much trash. If you want to dig nickels and some trash, set up the discrimination level so it just hits on a nickel.
Running discrimination low, you can learn what iron sounds like and dig all kinds of stuff. It's a great relic, coin and beach hunter too. I have learned that when hunting salt water beaches, you have to make sure the coil is 1-2 inches above the wet, salt sand or it will false ( this is using the 15 inch WOT coil and 10 inch coil...I have not tried the smaller coin in the wet sand). If you can learn to live with the chatter and falsing running the coil closer to the ground, a good target still breaks through the chatter and you will know it. Thing is, the deeper, fainter sounding targets you may not hear through the chatter. Beach hunting salt water is tricky, but it can be done and I have found silver coins and rings with the Advantage as well as deep sinkers. No gold yet for the Musky, but I am sure if I used it more on the beach, I could find some...I just have other beach machines that are more geared for that type of hunting, so the Advantage does not get used much for beach hunting.
Sweep it fast or slow, it has a great recovery speed and you can run it in fixed ground balance mode with great results in normal to moderate soils, and use the manual ground balance if the soil is mineralized and still get great depth.
Also, the Advantage, in my opinion, goes deeper in discriminate mode. You can run it with sensitivity low for a quiet machine, medium to get more depth or wide open where it's chirping and sputtering and go real deep. I run mine just below the point where it becomes a little unstable ( for me that is at the 3:00 position on the sensitivity knob) and still hit silver dimes deep. I mostly use fixed ground balance too on the land since the soils I hunt in are neutral.
Like the person posted, go to Yahoo and join the Musketeer group. I did, and got some great info from it. There are a few articles on how to run it and how to ground balance it too.
I have sold a lot of detectors, but I will keep the Musky around for a long time because it's very easy to set up and use, goes deep and has a great recovery speed. Other than you possibly wanting to water detect, the Musky is probably the only machine you will need. Don't worry about target displays and other bells and whistles the other units have...learn what a good target sounds like and dig em up !
JC