I don't know how much time, patience, tolerance you have, but I tend to post lengthy, overly drawn out, bordering on boorish posts with lots of pictures.
So may I suggest you do a search on this forum only under my screen name, for my posts on the Excel, and then look on this forum at a recent comparison between the Minelab X50 & Edge I did.
The Edge is very much like a souped up Excel. So by looking at the pix of my Excel finds, should give you a feeling of what you can expect in the way of good and trash targets. Obviously others have posted finds also, but many of them also own the Coinstrike, so their posts aren't as restricted to the Excel as mine have been.
I'm not trying to toot my own horn in this, it's just that it's the most practical solution I can think of to get you the information you're looking for as quickly as possible.
Also look at the Field Test by B. Ladd.
As an absolute beginner preset, set Sens to say 6 or 7, no higher than 8, and disc to 0(zero). Run the machine for several weeks just to get comfortable with where the targets ID. Swing at a moderate speed and approach iffy targets at several angles, not just 90deg, you'll be amazed at the stuff you can pull out of trash.
Phew, there's no more oxygen left in this forum.
HH
BarnacleBill