Hello Reddog777,
As Jan1 said, the detector takes some getting use to. Advice to first time Explorer users is to use the factory preset settings until you get the hang of the tones and what it is telling you. Personally I prefer the Explorer II over the SE. They are very similar but the SE I had, didn't ID iron as well (FOR ME). You will be amazed at the way an 8" coin sings out! You will also be amazed at good targets next to junk that you can hear easily. To me it is the raw depth with accurate tones that makes this machine great.
There are a couple things that users have complained about for years. Weight is one thing - good for young bodies, a pain for older ones. Next is the display ID, it only really works good in clean ground. Here is how it works... when you detect a target the cursor moves to the proper spot upon the resumption of the threshold tone. If you are detecting over many targets, the threshold tone may never come back and the cursor gets stuck. This has given rise to the "Explorer ID Flail" where the target is swept, then the coil is flailed upward in an attempt to get the darn thing to show on the display. Don't worry though, because the tone ID is right on the money. That is what is great about the Explorer, you do not have to spend any time staring at the screen, because 95% of the ID is done by ear. People have complained about glare on the screen, but it never bothered me much.
Don't be too concerned about the learning curve. For me it was very short. Like maybe three days and I "got it". Others have more trouble. Of course even after you "get it" the Explorer will keep teaching you it's language.
Hope this helps and HH - BF