Re: Garrett 250 - Looking for the deepest coil possible & !!!
I have Garrett equipment with the small Sniper coil, the stock coil and the DD 10X14 beast. I have used all of them in all kinds of difficult and easy situations. It is easier to use the small coil in trashy areas because its footprint is small and has less opportunity for having multiple items in it's search field. It still has surprising depth (insert depth disclaimer here

) depending on the dampness/mineralization of the soil, size of target, etc. The larger coils see deeper but will miss the smallest items (like ear ring backs, etc), but they have a larger search field so they pick up more items at the same time resulting in mixed signals or masking.
My point is this you have a great detector made by a great company. A universal truth is that people get a detector and are frustrated

during their learning curve. They will often get another machine by another manufacturer thinking that their frustration is caused by the machine rather than the learning curve. The experience with the first machine makes it easier to learn the second machine and they sing that machines praises. The hard part

is learning what the detector and coil are saying. A test garden is essential in learning the detector's language and how to use the coil for more information. For example when I get an indication of a quarter on my initial swing, I will re-swing from a different angle (called x-ing) to see if it still give the same signal. If it is dead-on quarter signals it is usually a quarter. If it gives different indications it is usually a beer cap. It could also be a quarter with another item close by. The detector will tell you what it is seeing, it is our job

to figure out what it thinks that is. There is nothing better than time in the field. I usually go with a friend who has been detecting for about 20 years. I ask him to call me over when he finds something deep so I can see how to use my detector to see it. This includes adjusting sensitivity, swing speed, etc until I see it. This is when I am able to fine tune my craftsmanship in using my machine/coil.
I don't have one but I'm told the Garrett 2500 is maximized for depth...