I have a ace 250 with a NEL attack. Overall I was getting around a 2-4" increase on coins. I can get a solid hit at around 10" sometimes 11" on a silver coin. First time out with it I went over my property again and got a 42 mercury at 8" and the tone and ID couldn't have been clearer. The ground was frozen at the time and the whole time I was waiting for warm weather I was saying there's a dime down there haha.
Hope this helps.
As for if you'd like it. It definitely is for non trash cluttered areas because it covers a ton of ground. I loved it the week I had it at the beach, didn't use anything else. Pinpointing is tricky to learn but if you take the time it's pretty darn accurate and can get within a couple inches. If you have any specific questions that you want to know about feel free to pm. Like I said though it's on a 250 so I haven't used it one an At.